Grade 8 2020-2021
Which form of energy is almost always produced during energy transformations?
O
A heat
B. electricity
C. light
D. sound

Answers

Answer 1

Answer:

A

Explanation:

Because I searched it up

Answer 2

Answer:

A

Explanation:

During transformations from one form to another, heat energy is almost always produced. Whenever a form of energy is converted to the other form, heat is almost always released during the reaction.


Related Questions

What is the cisterna chyli

Answers

Answer:

the cisterna chyli is the dilated origin of the thoracic duct, which receives the right and left lumber lymphatic trunks and the intestinal lymphatic trunk.

Which of the following is a benefit of genetic engineering to humans?
Reducing diversity of organisms
B
Developing medicines for humans
Decreasing the yield of crops
Producing foods with low nutritional value

Answers

The answer is B. Developing medicines for humans.

Answer choice A would not benefit society, nor would answer choices C and D.

Brainliest please!

Analyze Can relative humidity be more
than 100 percent? Explain your answer.

Answers

Answer:

Surprisingly, yes, the condition is known as supersaturation. At any given temperature and air pressure, a specific maximum amount of water vapor in the air will produce a relative humidity (RH) of 100 percent. Supersaturated air literally contains more water vapor than is needed to cause saturation.

Explanation:

How do plant cells differ from animal cells

Answers

Answer: Plant cells have chlorophyll, chloroplasts, cell walls, a more blocky shape, and larger vacuoles. Animal cells have a more rounder shape, no cell wall but only a cell membrane, smaller vacuoles, and other organelles such has centrosomes, which plant cells don’t have.

Explanation:

Answer:

Plant and animal cells are  different in that plant cells have chloroplasts and rigid cell walls, while animal cells do not.

How is energy cycled through a cell?

Answers

Answer:The cell needs glucose to have ATP and the cycle is cellular respiration. It turns glucose into energy by forming that ATP.

Explanation:

What are groups of great white sharks believed to have established

Answers

Answer:

Mackerel sharks

Explanation:

Answer:

dom­i­nance hi­er­ar­chies

Explanation:

Which statement best summarizes how the light-dependent reactions and light-independent reactions (Calvin cycle) work together during photosynthesis
The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose
The light-dependent reactions capture energy and the light-independent reactions use that energy to make ATP
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make ATP
The light-dependent reactions capture bees and the light-independent reactions blend those bees up into golden cheddar mac and cheese... watch
out for the stingers though
The light-dependent reactions take in glucose (food energy) and the light-independent reactions use the glucose to make energy in the form of
sunlight

Answers

The light-dependent reactions capture energy and the light-independent reactions use that energy to make glucose

The energy captured in the light-dependent reactions is stored in ATP and NADPH and is used in Calvin's cycle to fixateCO2 in order to synthesize glucose

PLZZZ HELP ME Which of the following is NOT a characteristic of plants?
O Create food through photosynthesis
O Multicellular organisms
O Incapable of movement
O Capable of moving by themselves

Answers

uh i would say the last option ?

help me please!!
the thing is 42 points it’s the most i could put

Answers

Answer: I

Explanation:

I’m pretty sure the answer is  i

Answer:

h

Explanation:

The maximum number of individuals that an environment can support is called the ___. A)population density B)Competition Factor C)density Independent factors D)carrying capacity

Answers

Answer:

D

Explanation:

Answer:

D

Explanation:

Population density is how dense a population is or how to spread out it is. Though carrying capacity is how much a thing such as land can carry such as lifeform and organisims.

Explain how it is possible for nutrients to be transported to the cells of a flatworm with no circulatory system.

Answers

Answer:

Flatworms are beings that do not have a heart, veins, arteries, capillaries, hemolymph, or some type of circulatory fluid. Their circulation occurs between cells or intercellularly and they are responsible for transporting substances by diffusion from cell to cell.

Explanation:

Flatworms are considered multicellular eukaryotic organisms. This implies that in their cells they have a cellular nucleus, in which the DNA is contained, structuring the chromosomes. Likewise, they are made up of several types of cells, each one specialized in a specific function. They lack a structured circulatory system as such. Because of this they do not have specialized structures such as a heart or blood vessels, however, the circulation of certain substances is established between their cells. This is done thanks to the diffusion process. Substances pass from one cell to another through this process.This does not apply to all flatworms, since in some species of bog and digenae there is a certain organization and some very small conducting vessels known as the endolymphatic system, the which forms a kind of plexus in the parenchyma.It should also be noted that some species do not even have a digestive system, being the digestive tract the one in charge of digestive functions and the distribution of the nutrients they receive.

11
Sea otters move into the ocean bay. The eat all the sea urchins. This change will cause the
A. Kelp to have less food
B. crabs to have less food
C. Sea ducks to have more food
D.Arctic foxes to have more food

Answers

well sea urchins are primarily food for crabs, so by sea otters eating the sea urchins crabs will end up with no good

The presence of sea otters in an ocean bay will result in a reduction in the amount of food available to carbs because they feed on sea urchins. Therefore, option (B) is correct.

What is food chain?

The linear relationship between creatures that demonstrates how they obtain energy by feeding on one another is referred to as the food chain.

The information provided in this inquiry suggests that sea otters migrate into the ocean bay and consume all of the sea urchins there.

This leads one to believe that they cut down on the food supply of another eater of urchins, such as carbs. Because of this, the introduction of sea otters into the ocean bay will result in there being less food available for carbs.

Learn more about food chain, here:

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A plant has a genetic defect that causes its leaves to dry out, becoming brittle and prone to injuries. The genetic defect most likely causes each leaf to lack a________

I need help. I am currently taking the test in Edg. If u are correct, I will mark u Brainliest! :)

Answers

Answer:

sufficient root system that can support the plant's growth

Answer:

The answer is a: cuticle

Explanation:

The cuticle is a waxy, water-repellent layer found on the outer covering of plants that prevents injury and water loss.

Potassium thiosulfate (K2S2O3) is used to remove any excess chlorine from fibers and fabrics that have been bleached with that gas. The reaction is K2S2O3 + 4Cl2+ 5H2O→2KHSO4 + 8HCl a. What mass of HCl will be produced at the same time that 45.0 g of KHSO4 is produced? (5 pst) b. What mass of Cl2 is consumed along with 2.20 x 1024 molecules of H2O? (5 pts)

Answers

Answer:

The correct answer is a) 48.16 grams of HCl will be produced, b) mass of chlorine consumed is 206 grams.

Explanation:

a) The reaction given is:

K₂S₂O₃ + 4Cl₂ + 5H₂O ⇒ 2KHSO₄ + 8HCl

Based on the given information, the mass of KHSO4 is 45 grams. The moles of KHSO4 can be determined by using the formula,  

Moles = given mass/Molar mass

= 45/136.16

= 0.33 Moles of KHSO₄

From the reaction it can be seen that when 2 moles of KHSO₄ is produced, 8 moles of HCl is also produced. Therefore,  

2 moles of KHSO₄ = 8 moles of HCl

So, moles of HCl will be,  

Moles of HCl = 8 × 0.33/2

= 1.321 moles

Now the mass of HCl is,  

Mass of HCl = Moles of HCl × Molar mass of HCl

= 1.321 × 36.46

= 48.16 grams of HCl

b) It is known that 1 mole is equal to 6.023 × 10²³ molecules

In the given case, the molecules of water is given, that is, 2.20 * 10²⁴ molecules. Now let us consider that the moles of water is x.  

x mole of water = 2.20 × 10²⁴ /6.022 × 10²³

= 3.653 mole of H2O

From the reaction given, it can be seen that when 5 moles of water are consumed, 4 moles of chlorine are consumed.  

5 moles of water = 4 moles of chlorine

3.653 moles H₂O = x moles of Cl₂

Moles of Cl₂ = 4 × 3.653 /5  

= 2.906 moles Cl₂

Now the mass of Cl₂ determined as,  

Mass of Cl₂ = moles of Cl₂ × Molar mass of Cl₂

= 2.906 × 70.9

= 206 grams

PLEASE HELP HELP HELP

Answers

Answer:

1st

Explanation:

how are hurricanes started? rain
snow
thunderstorms
sleet

Answers

Answer:

A pre-existing weather disturbance: A hurricane often starts out as a tropical wave. ... Thunderstorm activity: Thunderstorms turn ocean heat into hurricane fuel. Low wind shear: A large difference in wind speed and direction around or near the storm can weaken it

Explanation:

Answer:

and wind

Explanation:

Meiosis results in? ​

Answers

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells.

The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.

Answer:

It results in the reduction of chromosomes by half and produces four gamete cells.  And those four cells are the result and known as the daughter cells.

Explanation:

These pellets are not eliminated as _________________, but are regurgitated through the ___________________.

Answers

Answer:

These pellets are not eliminated as feces, but are regurgitated through the mouth. Pellets are not found exclusively within the owl families. There are many species of birds known to regurgitate pellets: hawks, eagles, kites, harriers, falcons, and even robins are some of the more familiar ones.

tell me if im wrong :/

Please help me this is hard for me

Answers

Answer:

D  

Explanation:

It is the bottom of the food chain

Answer:

D

Explanation:

It produces food for other animals

Can someone be able to help, I’ll give brainly and extra points! Plus a 100 points! Ty!:)

Answers

Answer:

I can't see the media clearly:'(

What is the second most abundant element on earth and seems to be very important in biological processes such as oxygen transportation in the body and cellular respiration

Answers

Answer:

iron

Explanation:

Cellular respiration may be defined as the group of metabolic processes as well as reactions which occurs in the cells of the organisms that converts the chemical energy from the oxygen molecules or from nutrients into ATP or adenosine triphosphate and then releases the waste products. Thus it breaks the glucose and produces the ATP. Iron is an important element which are used in many important biological processes in the body like the cellular respiration and oxygen transportation.

A species of eels that lives in the ocean can move up rivers to spawn. A freshwater pike is unable to move into the ocean from a river. Based on your knowledge of cellular membranes, explain why eels can move back and forth into the ocean, whereas pike cannot.

Answers

Answer:

Eels are a long, thin slimy fish that have a fin that runs the entire lengths of the backs of their bodies, extends around the tail and run for a distance on the underside of the fish. They have a wide and strong mouth. The pike has a long, slender body that is olive green in color and fades to yellowish-white on its belly. The reason for this is because they have diffrent bodies and a eel is small while pikes are big and have more weight.

Explanation:

Hope this helps. Mark me brainlist plzzzzz

why did china remain isolated

Answers

Answer:

In the last 50 years or so of the Ming Dyansties, the emperor simply lacked the necessary resources and man power to sustain large amounts of trade, causing China to become isolated from the world.

Explanation:

True or False? Many marine organisms depend on estuaries during at least some point of their life.

Answers

Answer:

False

Explanation:

It is false because it is not true.

Pls mark brainlist

lol yeah it’s false

Name a storage protein in our bodies.

Explain the function of this storage protein in our bodies.

Where is this storage protein found?

please help

Answers

Answer:

Storage proteins serve as biological reserves of metal ions and amino acids, used by organisms. They are found in plant seeds, egg whites, and milk. Ferritin is an example of a storage protein that stores iron. Iron is a component of heme, which is contained in the transport protein, hemoglobin and in cytochromes.

Explanation:

Hope this helps.

How does the presence of suspense in a story affect readers?

It helps them predict the story’s outcome.
It gives them hints about the characters’ thoughts.
It makes them skip the boring parts.
It keeps them engaged in the story.

Answers

Answer:

Suspense ensures the reader will have enough interest to continue reading throughout the piece. If the author has done his job, suspense will continue to increase up until the climax, or the final confrontation and turning point.

Explanation:

Hope this works out my friend

It keeps them engaged in the story. So, the correct option is (D).

What is Suspense?

Suspense is defined as a state of mental uncertainty, worry, being undecided, or being doubtful. It is the anticipation of the outcome of a plot or the resolution of an uncertainty, riddle, or mystery, especially as it affects a character for whom there is sympathy.

Following are the types of suspense :

Narrative SuspenseShort-term SuspenseRomantic/Comedic SuspenseCliffhangersMysteryHorror

The smart use of suspense in a story that helps build suspense and keep the plot engaging as the reader progresses, and sets the stage for genuine surprise and shock when a major plot point or twist is revealed from an unexpected angle.

Thus, it keeps them engaged in the story. So, the correct option is (D).

Learn more about Suspense, here:

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Which statement describes how heat flows from the coffee to the part of the spoon in the coffee?

Heat flows from the coffee to the spoon through radiation.
Heat flows from the coffee to the spoon through convection.
Heat flows from the coffee to the spoon through conduction.
Heat flows from the coffee to the spoon through radiation, convection, and conduction.

Answers

Answer:

C. Heat flows from the coffee to the spoon through conduction.

The heat movement known to move from one area to elsewhere has been called heat transfer. Thermal conduction allows the coffee's heat to reach the spoon. Thus, option C is correct.

What is thermal conduction?

A type of heat transfer called thermal conduction occurs when heat flows from one spot to some other place due to the disparity in temperatures between the bodies.

When a body is subjected to thermal conduction, heat energy is dissipated from the body towards the colder or less heated objects. Because the spoon and coffee are at different temperatures, the heat from the coffee is passed to the spoon through conduction.

Therefore, thermal conduction is the process through which the coffee heats the spoon in the cup.

Learn more about thermal conduction here:

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WILL MARK BRAINLIEST FOR FIRST ANSWER
A DNA sequence is shown.

CTG - GAG - CAT

Which sequences show the result of an insertion mutation in the DNA? Check all that apply.

A.CTG - GGC - AT
B. CTG - TAT - CAT
C. TTG - GAG - CAT
D. CTA - GGA - GCA - T
E. CTG - GAG - TCG - AT

Answers

Answer:

CTA - GGA - GCA - T and CTG - GAG - TCG - AT

Explanation:

Pls mark brainliest

Answer:

CTA - GGA - GCA - T and CTG - GAG - TCG - AT is correct the guy above is very smart

Explanation:

In the periodic table, vertical columns are called periods.
TRUE
FALSE

Answers

Answer:

FALSE

Explanation:

In the periodic table, vertical columns are called GROUPS.

This is a FALSE statement

The horizontal rows on the periodic table are called periods.

What are the functions of proteins?

Answers

Answer:

the function  for proteins:

Repair and Maintenance.

Energy.

Hormones.

Enzymes.

Explanation:

Explanation:

Proteins are a class of macromolecules that perform a diverse range of functions for the cell. They help in metabolism by providing structural support and by acting as enzymes, carriers, or hormones. The building blocks of proteins (monomers) are amino acids.

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