Which process involves a decrease in the dispersal of matter? Select the correct answer below: heat exchange between two solids

Answers

Answer 1

Answer:

The options are

A.heat exchange between two solids

B.the decomposition of a compound into its constituent elements

C.the precipitation of a solid

D.none of the above

The answer is

C.the precipitation of a solid

Dispersal of matter involves the process whereby there is more space occupied by the resulting element/compound than the initial one. For example the conversion of liquid to gas means that it has an increase in the dispersal of matter as the gas particles will contain more space when compared to a liquid.

Precipitation of a solid means conversion of a liquid to a solid. A liquid is known to contain more space which means there is a decrease in the dispersal of matter.

Answer 2

The process that involved the reduction in the dispersal of matter should be the precipitation of a solid

What is the dispersal of matter?

It refers to the process in which it contains the additional space that should be occupied. Like the conversion of the liquid to gas represent there should be increment in the disperson of the matter since the particles of the gas comprise more space at the time when the comparison is to be done with the liquid. Here, precipitation of the solid represent the transformation of the liquid to the solid.

This question is incomplete. Please find the options below.

A.heat exchange between two solids

B.the decomposition of a compound into its constituent elements

C.the precipitation of a solid

D.none of the above

Learn more about dispersal of matter here: https://brainly.com/question/6529880?referrer=searchResults


Related Questions

which word of the poem are an example of a simile

Answers

Answer:

I don't know what exactly you are asking so

A simile is comparing 2 thing using "like" or "as"

Example: Her cheeks were red as a rose

Simile is common poetic device. The subject of the poem is described by comparing it to another object or subject, using 'as' or 'like'. For example, the subject may be 'creeping as quietly as a mouse' or be 'sly, like a fox. '

Why are G proteins known as guanine nucleotide-binding protein?

Answers

Answer:

G proteins, also known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior. ... G proteins belong to the larger group of enzymes called GTPases.

The root of mutualism, mutual,
means...
A. together.
B. alone.
C. only.​

Answers

Answer:

A. Together.

Explanation:

The root word of mutualism, mutual means together or a thing that many people share.

For example:

Mutualist Symbiotic Relationship refers to a relationship in which organisms are benefited, in other words it is a win-win.

The relationship between the Egyptian plover bird and the crocodile, that is mutualist relationship.

When a meat or something (food) gets stuck in the teeth of the crocodile then the Egyptian plover bird takes it out (like a toothpick).

The crocodile gets benefited.

The bird also gets benefited (its gets its food)

Hope this helps ;) ❤❤❤

Answer:

together

Explanation:

Mutualism is defined as a relationship that benefits two organisms, or it is defined as a doctrine in sociology where mutual aid is beneficial to society and the individual. An example of mutualism is pollination which is when bees take nectar from flowers and then deposit the nectar on another flower.

For lions how can we determine who the father is

Answers

umm we need an example

Which is biotic?
O water
O temperature
beeswax
rocks​

Answers

Beeswax because it is a livong thing

The biotic factor among the options given is beeswax, which is the third option, as the biotic factors are living or once-living organisms in an ecosystem that directly or indirectly affect other organisms.

What is a "biotic factor"?

Biotic factors are living or once-living components of an ecosystem that have a direct or indirect effect on the survival, growth, and reproduction of other living organisms. Examples of biotic factors include plants, animals, fungi, bacteria, and other microorganisms that are part of the ecosystem. Beeswax, as mentioned, is a biotic factor because it is produced by living organisms, specifically bees. Beeswax is used by bees to build their hives or nests, which are important structures for their survival and reproduction.

Hence, the biotic factor among the options given is beeswax, which is the third option.

Learn more about the biotic factor here.

https://brainly.com/question/953399

#SPJ7

Which enzyme is used in gluconeogenesis, but NOT in glycolysis? Group of answer choices PEP carboxykinase enolase (interconverts 2-phosphoglycerate and phosphoenolpyruvate)

Answers

Answer:

PEP carboxykinase

Explanation:

PEP carboxykinase is also known as Phosphoenolpyruvate carboxykinase. It is an enzyme which is used for the production of glucose from non-carbohydrate carbon substrates. This enzyme is used only in gluconeogenesis not in glycolysis because this enzyme helps in the production of glucose while glycolysis is a process in which the glucose  break down into pyruvate and ATP molecules.

What is a factor of nutrient collapse?

Answers

Answer:

The nutrient collapse  that atmosphere is change that food we eat and no is paying attention.

Explanation:

Nutrient collapse in the agriculture research it the mos important foods been getting nutrition less, they generally vegetables, fruits minerals and vitamin, protein content has to past.

The researching choosing crops for higher yields and nutrition and wheat to less nutrient,fruits and vegetables that form protein to calcium, iron and vitamin are varieties choosing to grow.

Atmosphere may be change and food we eat,and human needs a oxygen and they plants need a carbon dioxide, and the level the atmosphere is rising.

Carbon dioxide is the atmosphere in turn the contributes to the plant growth,and food production an quality of food is better.

Human nutrient linked through a quality of plants and affected the balance of nutrient in rice, crop and they people rely on, human chain need to measured and understood.

It simply not discussed to the agriculture and health public or nutrient communities.

How do animals survive along the deeper parts of the seafloor? A They feed at the surface. B They feed on each other. C They photosynthesize.

Answers

Answer:

They photosynthesize..

Explanation:

There are several ways deep ocean animals survive in such an enviournment..Food is scare in much of the deep sea, in parts because photosynthesis only thakes place at the ocean's surface where there's sunlight. Most animals cope with this by begin very small and meeding less to eat of by growoing very slow..

Answer:

the answer is They photosynthesize..

Explanation:

What is a peer review? Why is it important?

Answers

Peer review is having other professionals or people with similar skill sets review you work. It is important to help catch any errors.

Answer:

Peer review involves subjecting the author's scholarly work and research to the scrutiny of other experts in the same field to check its validity and evaluate its suitability for publication. A peer review helps the publisher decide whether a work should be accepted.

Watch the video and answer the question in 2 or 3 paragraphs. What are the main causes of air pollution? Discuss some effects of air pollution and provide possible solutions to this environmental issue. https://youtu.be/_dTtvtlct9k

Answers

Answer:

Explanation:

Exhaust from vehicles, factories, volcanoes and wildfires are the major causes of air pollution.

Effects of air pollution include many diseases. For example heart disease, lung disease, respiratory diseases etc... They also damage nerves, brain, kidney, lungs, heart etc...

Solution to air pollution:

We should replace the fossil fuels with natural energies like solar, wind, geothermal, hydro etc...

Waste water treatment

Dust control

Hope this helps

plz mark as brainliest!!!!!!

INDEPENDENT, DEPENDENT, OR CONTROL?
You water three sunflower plants with salt water. Each plant receives a
different concentration of salt solution. A fourth plant receives pure water.
After a two-week period, the height is measured.
1. Is the height the independent variable or dependent variable?
2. What is the control group in this experiment?

Answers

Answer:

dependent variable

the control group is the fourth plant with pure water.

Explanation:


A scientist wants to find the percent of teens that like the taste of "brand X"lemonade over "brand Y" lemonade. She conducts a taste test of
500 teenagers. She gives each teen a bottle of lemonade with the labels showing the brand of each lemonade. She asks each teenager to taste
each brand after drinking water in between. She finds that 50% of teens like brand X and 50% like brand Y lemonade. Why are the results
of the survey most likely unreliable?

a

Adults were not interviewed.

b

Not enough teens were interviewed.

с

The investigation was based on taste,

d

The lemonade labels introduced bias.​

Answers

Answer:

c

Explanation:

beacuse the investigation was beacesd on taste  

Climate change and succession both result in a change to the ocean ecosystem. What is succession?
a. Succession is a gradual change to ocean temperatures.
b. Succession is a gradual change to ocean communities.
c. Succession is a rapid change in ocean temperatures.
f
d. Succession is a rapid change to ocean communities.

Answers

Answer:

b. Succession is a gradual change to ocean communities

Explanation:

An ecosystem can undergo changes in it's structure and composition over a particular period of time. This term is called ECOLOGICAL SUCCESSION. Succession is the gradual change that occurs to a community over time. Succession is of two types; primary and secondary succession.

According to the question, climate change and succession are causes of change to the ocean ecosystem. Hence, succession there represents the gradual change that occurs to the structural composition of ocean ecosystem over time.

Answer:

The answer is B - Succession is a gradual change to ocean communities

Explanation:

Think of primary and secondary succession, these processes take time.

Which is a function of the cell membrane? performs photosynthesis controls what enters and leaves the cell produces proteins provides energy to the cell

Answers

Answer: controls what enters and leaves the cell

Explanation: it is a barrier keeping the constituents of the cell in and unwanted substansces out and is also a gate allowing transport into the cell of essential nutirnts and movement from cell of waste products.

The cell membrane is also referred to as the plasma membrane or cytoplasmic membrane of the cell. It lays various functions in the cell.

The correct answer is:

Option B. controls what enters and leaves the cell

Role of the cell membrane are:

The cell membrane is a biological membrane, which separates the interior of the cell from the external environment.

The cell membrane is selectively permeable such that it allows certain molecules to pass through them.

The cell membrane controls the entry and exiting of molecules from the cell.

Thus, the correct answer is Option B.

To know more about cell membrane, refer to the following link:

https://brainly.com/question/17254662

DNA is transcribed to messenger RNA (mRNA), and the mRNA is translated to proteins on the ribosomes. A sequence of three nucleotides on an mRNA molecule is called a codon. As you can see in the table, most codons specify a particular amino acid to be added to the growing protein chain. In addition, one codon (shown in blue) codes for the amino acid methionine and functions as a "start" signal. Three codons (shown in red) do not code for amino acids, but instead function as "stop" signals.
Sort the following ten codons into one of the three bins, according to whether they code for a start codon, an in-sequence amino acid, or a stop codon
AUG, UAG, UAA, UGA, AAA, UGC, AUC, CAC, GCA, ACU

Answers

Answer:

start codon - AUG

in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU

stop codon - UAA, UAG, UGA

Explanation:

From the amino acid chart, the start codon is represented by the codon AUG which also code for the amino acid methionine. There are three stop codons including UAA, UAG, and UGA. The stop codons signal the end of the translation process of the mRNA. Every other codon within the mRNA chain codes for different amino acids except methionine.

Hence, using the attached amino acid chart:

start codon - AUG

in-sequence amino acid - AAA, UGC, AUC, CAC, GCA, ACU

stop codon - UAA, UAG, UGA

A layer of cells called the endodermis surrounds the stele. Xylem is found towards the center of the stele and phloem towards the outside of the stele. 18) How does this compare to their arrangement in the stem? 19) The meristematic region is protected in the root by the presence of a root cap. How is the meristematic region protected in the stem tip? 20) In which of these regions would you expect to find the specialized cells of vascular tissue? 21) In which of these regions are the cells genetically identical? 22) Why?

Answers

Answer:

Epidermis layer is responsible for the protection of meristematic region.

Explanation:

Meristematic region is protected in the stem tip by epidermis which consist of dead layer of cells. Epidermis is the outer layer of stems, leaves, flowers and fruits which is responsible for the protection of inner part from damage. Vascular bundle such as phloem present near the boundary of the stem while the xylem is present in the inside of the stem. In the inside layer of the stem, all the xylem cells are genetically identical while the layer that is present at the edge of the stem is phloem in which all the cells are  genetically identical to each other.

In humans, insulin is manufactured in the pancreas, insulin is a peptide hormone that causes the body’s cells to take up glucose. The blueprint for the polypeptide chain that is insulin is found in the — of specialized pancreatic cells.

Answers

Answer:

In type 1 diabetes the immune system erroneously attacks the beta cells that produce insulin in your pancreas. It causes permanent damage, leaving your pancreas unable to produce insulin. Exactly what triggers the immune system to do that isn't clear. Genetic and environmental factors may play a role.

Explanation:

Nucleic acids

Composed of Carbon, Hydrogen, Oxygen, Nitrogen and phosphorous.

DNA

The universal code that stores genetic information in all organisms

Semi

conservative-Bases in original strand split and new nucleotides complementary base pair to form two new strands

Mutations

Any change to the DNA sequence

Gene mutation

Permanent change in the DNA sequence that makes up a gene.

Transcription

The process of copying a nucleotide sequence of DNA to form a complementary strand of mRNA

Translation

Process by which mRNA is decoded and proteins are made.

Codon

Three nucleotide bases

tRNA

Reads the codon on the mRNA using anticodons and the complimentary base pair rules and delivers the amino acids

What would be the replicated DNA strand for the following DNA sequence?...GCGTATG

CGCATATC

What would be the mRNA and tRNA be for the following DNA sequence?...AGGTTA

mRNA...UCCAAU. tRNA...AGGUUA.

The process of converting the genetic message from DNA into ____ is called transcription.

mRNA

How many amino acids are in the human body and what do we call the bond that holds them together?

20; Peptide bond

A single strand of DNA contains the following nine nucleotides in order ACTTATGGA. What sequence of bases will be present on the complementary strand of DNA?

TGAATACCT

In humans, insulin is manufactured in the pancreas. Insulin is a peptide hormone that causes the body's cells to take up glucose. The blueprint for the polypeptide chain that is insulin is found in the __________ of specialized pancreatic cells.

DNA

Given the sequence of DNA nucleotide bases TTAGCCTTG, give the complementary mRNA produced during transcription.

AATCGGAAC

Identify the correct sequence of molecules, as a gene goes from coded information in the nucleus, to the product the cell wants to make.

DNA...messenger RNA...transfer RNA...Protein

Why is DNA replication considered semiconservative?

Each half of the old DNA strand serves as a template for the new growing strand causing the copied DNA to half new and half old.

Given the gene sequence GGACCGTCGATCTTC, which of the following choices would
represent an inversion mutation?
A. CCACCGTCGATCTTC
B. GGACCG TCGATC TTC
C. GGACCGTCGATCCTT
D. GGAC TCGATC TTC

Answers

Answer:

I would go with A maybe,am not really sure though.

ABO blood type is examined in a Taiwanese population, and allele frequencies are determined. In the population,
f (IA) = 0.30,
f(IB) = 0.15, and
f (i) = 0.55.
What are the frequencies of the various genotypes and various phenotypes in this population? Assume Hardy-Weinberg equilibrium.

Answers

Answer and Explanation:

Due to technical problems, you will find the answer and explanation in the attached file.

The amount of matter something has is

Answers

Answer:

mass

Explanation:

mass is the amount of matter an object is made up off.

[tex] \LARGE{ \underline{\underline{ \sf{\pink{Required \: answer:}}}}}[/tex]

The amount of matter a substance have is known as Mass. Mass is a fixed everywhere in the universe. Sometimes we get confused between Mass and weight, but we should remember that Weight is the force with which a body is attracted towards earth. And above is the definition of mass. It is measured by common balance.

~ [tex] \large{ \pink{ \sf{FadedElla}}}[/tex]

What alternate form of genes do nucleic acids have that allows them to offer variability?

Answers

Answer:

allales

Explanation:

an allele is the variant from a gene

Answer:

A. allales

Explanation:

Which area of the respiratory system is vascularized with the richest capillary network in the body?​

Answers

Answer:

There are from 200-500 million alveoli (mean diameter = 200 micrometers) in adult human lungs

Explanation:

The epithelial cells of the alveolar septum are markedly thinned and the capillary network immediately beneath the epithelium is the richest in the body.hope this helps you :)

Answer:

The answer is alveoli

When an enzymatic reaction is in progress, do you expect to see an increase, decrease or no change in each of following: (i) substrate (ii) product (iii) enzyme

Answers

Answer:

During Enzymatic reaction, enzymes binds to a substrate to form a which then forms the product.

Substrate: A reactant in an enzymatic or chemical reaction is called substrate. Product: The final outcome or substance after completion of reaction is called product.Enzyme: Enzyme helps to increase the rate of reaction and act as a catalyst.

Change in shape of substrate, product and enzymes depends on the temperature outside the optimal range which affect bonding between enzyme and substrate. Enzymes definitely changes their size when bind to substrat and the process is called induced fit which increases the rate of reaction.

During an enzymatic reaction, their is an decrease in the concentration of substrate, an increase in the concentration of product, and no change in the concentration of the enzyme.

What is enzymatic reaction?

A reaction, which is mediated with the help of an enzyme is termed as enzymatic reaction. A substance, which functions as a catalyst in living organisms and regulate the rate at which the chemical reactions takes place is known as an enzyme.

The enzymatic reactions follows the lock and key model, in which the free enzyme combines with the substrate and forms the enzyme-substrate complex, this is further catalyzed into the enzyme-product complex, from which the free enzyme and product get discharged. The product never further binds with the free enzyme.

In the reaction, the substrate get used up thus its concentration decreases, while the formation of product takes place thus its concentration increases. However, there is no change in the concentration of the enzyme as it does not get used up in the process.

Thus, in enzymatic reaction, substrate decreases, product increases, and enzyme concentration remains the same.

Find out more information about enzymatic reaction here:

https://brainly.com/question/24618218

Aquatic organisms in coastal areas face a variety of predators on land and in the water and air. Which ocean process exposes the coastal aquatic organisms to land-based predators? a. Changing wind patterns alter the ocean currents, changing tide levels. b. Daily tidal patterns leave areas exposed to the land for part of the day. c. The constant wave action generates nutrients that attract predators. d. The ocean conveyor belt raises and lowers the water levels on the coasts.

Answers

Answer:

b

Explanation:

The correct answer as to the ocean process that exposes the coastal organisms to land-based predators would be the daily tidal patterns that leave the coastal area exposed to the land for a part of the day.

Some parts of the coastal areas become exposed to land during certain periods of the day as a result of tidal waves. When this happens, the aquatic organisms occupying these coastal areas become temporarily exposed to land predators who hunt and kill them for food.

Therefore, the correct option is b.

A paleontologist finds a relative complete skeleton but isn't sure if it is an ape fossil or a hominid fossil. Which of the following features would help distinguish between the two choices?

a. Position of the opening in the skull for the spinal cord
b. Design of the pelvis
c. Relative length of the hind limbs
d. Position of the eyes

Answers

I believe the answer is C. Apes have shorter legs than humans (hominids), therefore the answer is C

ASAP When ______ is hydrolyzed, it forms _______. A. protein, amino acids B. ATP, ADP C. polysaccharide, monosaccharide D. lipid, triglyceride

Answers

Answer:

The answer is ATP, ADP

Explanation:

When protein is hydrolyzed, it forms amino acids. Thus, the correct option is A.

What is Hydrolysis?

Hydrolysis may be defined as a chemical process that utilizes the molecules of water that involve the chemical breakdown of a compound.

Amino acids are the monomers of protein. These amino acids are linked together by peptide bonds. But the process of hydrolysis breaks the peptide bond between the amino acid sequences and released them significantly in free form.

Therefore, when protein is hydrolyzed, it forms amino acids. Thus, the correct option is A.

To learn more about Hydrolysis, refer to the link:

https://brainly.com/question/4352413

#SPJ5

Which of the following pairs of plants are rhizomes?
A. Cocoyam and Cassava
B. Canna lily and ginger
C. Onion and Garlic
D. Banana and plantain​

Answers

Answer:

B.

Explanation:

Examples of plants that are propagated this way include hops, asparagus, ginger, irises, lily of the valley, cannas, and sympodial orchids. Some rhizomes that are used directly in cooking include ginger, turmeric, galangal, fingerroot, and lotus.

how can an objects volume be determined using water displacement ?

Answers

Answer:

Using a graduated cylinder.

Explanation:

By using a graduated cylinder we can determine the volume of liquids.

(1)Volume of liquid=10cm^3

(2)Volume of liquid after adding an irregular substance exceeds the first one by 20cm^3

(1)V+(2)V=(3)Vtotal

10cm^3+20cm^3=30cm^3

Hope this helps ;) ❤❤❤

Lactose (milk sugar) is a carbohydrate that is formed by combining galactose and glucose. Which term best describes this molecule?

Answers

Answer:

disaccharide

Explanation:

A disaccharide is a form of sugar that is made up of the combination of two other sugar molecules that are simple. They possess the property to dissolve easily in water. The process that occurs to join the two simple sugars includes the removal of water from the molecules. Sucrose, lactose, and maltose are the three disaccharides.

Answer:

disaccharide

Explanation:

A disaccharide is a form of sugar that is made up of the combination of two other sugar molecules that are simple. They possess the property to dissolve easily in water. The process that occurs to join the two simple sugars includes the removal of water from the molecules. Sucrose, lactose, and maltose are the three disaccharides.

In most organisms, the end product of glycolysis is pyruvate. Pyruvate still contains a substantial amount of energy, which can be further extracted. Whether the organisms are operating under aerobic or anaerobic conditions determines the metabolic pathway that pyruvate undergoes to produce more ATP. In this tutorial, you will identify the end products of these metabolic pathways.

Answers

Answer:

Pyruvate helps in the production of ATP.

Explanation:

The molecule of pyruvate converted into acetyl CoA. Then each molecule which is produced during glycolysis loses electron and carbondioxide releases. After the breakdown of pyruvate, the electrons loses by pyruvate are transferred to NAD+ in order to produce NADH, which will be used by the cell to produce energy molecule such as ATP. So we can say that pyruvate plays a vital role in the formation of ATP molecule.

Other Questions
Distance between the two points ? (-3,10) and (3,-2) How many minutes does it take for light to go from the sun to the planet Uranus, a distance of 2.88x109 km? (Thevelocity of light is constant in free space and is 3.00x108 m/s) pLEASE SOLVE THE QUESTIONS (WILL MARK BRANLIEST) Un compaero de tu saln presenta una condicin especial llamada gigantismo, ya que su estatura es mucho mayor que la de los dems compaeros de la misma edad, el mdico descarta que sea un problema hereditario. Podemos suponer que este estudiante tiene insuficiencia de la hormona ____________________que la secreta la glndula _____________y se encuentra en la ___________. Esta hormona no ingresa a las clulas en su mecanismo de accin por ser __________________. Bomb calorimetry is a poor choice to determine the number of nutritional Calories in food; it consistently overestimates the Caloric content because options: A) dietary fiber isn't used by the body. B) carbohydrates don't burn to completion. C) proteins don't burn. D) water has Calories and isn't burnable. The PIOs primary responsibility to organizational leadership as an advisor is to: A. Be an intermediary between leadership and the news media B. Assess situations for public information implications C. Develop relationships with other organizations PIOs D. Set up interviews and write talking points Emotions often run high when negative messages are involved for both the sender and the receiver which makes high standards of ethics and etiquette important.a. Trueb. False Hey can anyone help me please? The numbers of words defined on randomly selected pages from a dictionary are shown below. Find the mean, median, mode of the listed numbers. 72 58 62 38 44 66 42 49 76 52 What is the mean? Select the correct choice below and ,if necessary ,fill in the answer box within your choice.(around to one decimal place as needed) My sister and I ______________a delicious lunch yesterday (affirmative) The transfer of political attitudes and beliefs __________. Group of answer choices is more likely to occur from parents to children never occurs from children to parents is exceptionally rare in families is more likely to occur from children to parents is just as likely to occur from children to parents as it is to occur from parents to children Identify which type of resources each product is prinicipally derived from For the past two months, Tim has been experiencing delusions, hallucinations, and disorganized speech. Based on these symptoms, which diagnosis would you give to Tim? to study how violent conflicts between groups could be averted one would most likely consult as Explain how you decided whether payments on foreign investment and government transfers counted on the positive or the negative side of the current account balance for the United Kingdom in 2001. Scientists have taken genes from a species of bacteria that is pathogenic to several insects and inserted the genes into potato plants. The bacterial genes cause a cell to produce toxins that kill the insects. As the potato plants grow, every cell of the plant contains the toxin-producing genes. This makes the potato resistant to attack by crop pests. Which of the following is a limitation of this new technology? A. There are no foreseen limitations with inserting bacterial genes into crop plants. B. The introduced gene will cause more diversity in the potato's genome, thus causing the potato plant to become extinct. C. The genetically altered potato plants will kill off so many insects that companies that manufacture pesticides will soon go out of business. D. Over time, insects are likely to develop resistance to the bacterial toxin. Reset Next Which of the following is a solution for 5 - 2x -3? Covert the verbal expression into an algebraic expression.The product of 23 and a number x How much would you have to deposit today if you wanted to have $60,000 in four years? Annual interest rate is 9%. (PV of $1, FV of $1, PVA of $1, and FVA of $1) (Use appropriate factor(s) from the tables provided.) b. Assume that you are saving up for a trip around the world when you graduate in two years. If you can earn 8% on your investments, how much would you have to deposit today to have $15,000 when you graduate? (Round your answer to 2 decimal places.) When a number is divided by 9 and its quotient is 12 and a remainder of 2