What is one way people have negatively affected land resources?
A) Habitat restoration
B) Urbanization
C) Terrace farming
D) Reforestation
Answer:
b
Explanation:
Urbanization is one way people have negatively affected land resources. Therefore, the correct option is B.
What is Urbanization?The process of urbanization occurs when the percentage of a country's population living in urban areas increases. This is a result of rural-urban migration, which occurs when people move from rural to urban areas in search of better job prospects, social services, and living standards. Urbanization has both beneficial and harmful effects on the environment and society.
On the plus side, urbanization can promote economic growth, better infrastructure, and greater access to social services, including healthcare, education, and social assistance. Additionally, it helps reduce stress on rural communities, which may experience issues of resource scarcity, resource overabundance, and environmental degradation.
Therefore, the correct option is B.
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How does earth get heat ?
Which characteristic did the ancient Greeks believe most distinguished them from "barbarians"? * A.Religion B. Skin color C.Language D.Dress E.Hairiness
Answer: It is A religion
Explanation: I got it right on the assignment.
the first living organism on earth was probably a(n) ___ because the fossil remnants indicate a single-celled prokaryote.
A solution with a greater number of hydrogen ions (H+) than hydroxide ions is called a(n)
Answer:
An acid is a solution with more H+ ions than OH- ions.
Explanation: I'm pretty sure acid is correct, if not I'm very sorry.
:D
What did Darwin believe?
A. Darwin believed that all organisms have a common ancestor.
B. Darwin believed that all organisms were created simultaneously by the force of nature
C. Darwin believed that all organisms have descended from two different ancestors.
Answer:
A
Explanation:
Evolution is one species evolving into another
Which factors would not decrease population and biodiversity?
a-high birth rates, low mortality rates
b-hunting of keystone species
c-a competitive invasive species
d-diseases and natural disasters
e-carrying capacity and limiting factors
e-carrying capacity and limiting factors
A structure within a cell that performs a specific function is a(n)
A. organelle
B. organ
C. endoplasmic reticulum
D. flagella
Answer:
A structure within a cell that performs a specific function is an organelle.
Explanation:
An organelle is a structure inside the cell that preforms functions that are necessary for the cell.
Examples of organelles are the ER, the Golgi Apparatus, and the Mitochondria.
Hope this helps.
A structure within a cell that performs a specific function is an organelle. An organelle is a subcomponent of a cell.
What are cell organelles?Cell organelles are the ultrastructure's present in the cell and they show division of labor.
These organelles perform specific function for the cell and thus constitute the framework of all living organisms.
The basic structure of cell contains a plasma membrane, nucleus and cytoplasm. However, ultra-microscopic structures are embedded in the cell cytoplasm and they are designated as organelles in a cell.
Endoplasmic reticulum, Golgi apparatus, mitochondria, ribosomes, microtubules, lysosomes etc. are the specialized organelles present in cell.
Each of these organelles perform specific function. For instance, mitochondria help in energy production, Golgi helps in protein modification and packaging.
Cell organelles are thus important structural and functional elements of a cell.
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What height in meters must the student climb in order to reach the top of the hill?
Answer: 256 or 300 sorry if i was incorrect
Explanation:
The student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.
What is the significance of the hill in the ecosystem?The hill is the highest point on Earth and plays an important role in ecosystems because it can provide a variety of different habitats for plants and animals as well as act as barriers that separate different ecosystems, such as the forest ecosystem present on one side of the hill from the grassland ecosystem present on the other side of the hill, and it is also a depositary of minerals and other resources.
Hence, the student must reach the top of the hill, and this is entirely dependent on the hill's elevation, which varies from one area to the next and is not constant in any particular area.
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4. Classity as man-made or natural extinction: Habitat Destruction, removal of natural habitats.
Both
Neither
Man-made
Natural extinction
What are the two most influential abiotic factors in determining biotic factors of an area?
Answer:
Grazing and predation are biotic factors; pH and temperature are abiotic factors.
Explanation:
Hope this helps.
In addition to liquid precipitation, which are present when freezing rain occurs?
ASAP IMAGE IS ATTACHED THIS IS NOT DIFFICULT
There are only 4 types of nucleotides in mRNA and 20 types of amino acids in proteins. This figure shows how 4 types of nucleotides can provide a unique code for each of the 20 types of amino acids.
6a. The mRNA code for each type of amino acid is a
sequence of _______ nucleotides, called a codon.
(2 / 3 / 4)
6b. In the figure, which mRNA codon codes for the amino acid Phe?
Answer:
The mRNA code for each type of amino acid is a sequence of three nucleotides, called a codon.mRNA codon that codes for the amino acid Phe es UUU.Explanation:
The messenger RNA (mRNA) has in its structure sequences of 4 nucleotides adenine, uracil, guanine and cytosine. The possible combinations of these nucleotides to group into triplets is 64 codons to form 20 amino acids, from which it can be concluded:
An amino acid can be encoded by more than one codon. From these combinations the three STOP codons are obtained.A mRNA codon is a sequence of three nucleotides that serves to encode an amino acid.
Phenylalanine (Phe), according to the image, is formed with the UUU codon.
A particular mouse found in northern Canada has a light gray coat in the colder winter months but in the summer months has a dark brown coat. What can you say about this change?
Answer:
It changes based upon the weather for camaflouge
Which conditions are required for natural selection? Select three options. Populations have genetic variation.Organisms overproduce offspring.Environmental conditions remain stable.Traits are passed on to only some of the offspring.Nature selects favorable adaptations.
The conditions required for natural selection are populations have genetic variation, organisms overproduce offspring and nature selects favorable adaptations.
What is natural selection?"Natural selection is the process through which populations of living organisms adapt and change."In order to adapt and survive in a changing environmental conditions, the organisms undergo into some changes (changes in traits) over time which leads to genetic variation among them. The best adapted characters/traits of organisms will survive and will creates its progeny (having new traits). It means that nature selects the most favorable adaptations.What do you mean by genetic variation?"It is a term used to describe the variation in the DNA sequence in each of our genomes."What is adaptation?"It is the biological mechanism by which organisms adjust to new environments or to changes in their current environment."Example: To reduce transpiration leaves of some plans are modified into spines.Hence, the correct options are: 1. Populations have genetic variation. 2. Organisms overproduce offspring. 5. Nature selects favorable adaptations.
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Answer:
The conditions required for natural selection are populations have genetic variation, organisms overproduce offspring and nature selects favorable adaptations.
Explanation:
Bands of hard and soft rock can lead to what landform.
Spit
Headlands and bays
Wave-cut platform
Answer: the answer is headland :) Headlands are formed when the sea attacks a section of coast with alternating bands of hard and soft rock.
Explanation:
Answer this question please!!
Could someone help me on question 15 and17 pls
Answer:
I believe 15 is Vomit since it's the other way of how to say throw up that starts with a V. And I'm pretty sure 17 is Digestive system.
Hope this helps :)
Organ systems in the human body perform vital functions. Which organ system directs all the other organ systems and is the control center of the human body?
a. nervous system
b. RespiratorySystem
c. Circulatory System
d. Reproductive System
Lava is rock that has undergone a physical change and has liquefied. What is known about this change?
The lava gained mass.
The lava was burned into smoke.
The lava can cool back into rock.
The lava lost mass.
Answer:
The lava can cool back into a rock
Explanation:
Physical changes can be reversed. Hence, the lava can cool back into rock.
What are physical changes?Physical changes are changes that happen to the physical properties of materials only. They are usually reversible when subjected to appropriate conditions.
In this case, the lava rock changed from a solid to a liquid as a result of melting at high a temperature. Once the liquefied rock is cooled, it will return back to being solid.
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20. Perspiration leaves the body through the
O collecting ducts
O nephrons
O sweat glands
O kidneys
If you could be any animal, what would you be? And why?
Answer:
A cat
Explanation:
Because if I were a pet cat at least someone would take care of me and I would not have to do any real things like responsibilities.
FOR A TEST!!
TRUE OR FALSE??
Consumers in an ecosystem get food molecules for cell respiration by eating other organisms including producers. Then, they perform cell respiration to use energy in food molecules to make ATP.
A medical test indicates that a patient has a defective protein. This condition is most
likely due to a change in the directions coded in the:
Answer:
the hereditary unit, gene
A clear sign that a subduction zone occurs in the ocean is the existence of a ______________________. *
Answer:
Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.
Which statement best explains the importance of enzymes lowering the activation energy necessary for reactions to take place?
a Reactions that require less energy to begin are able to occur more quickly.
b Reactions produce heat, causing the chemical bonds to become strong.
c Reactions are able to proceed slowly to maintain the metabolism of the cells.
d Reactions requiring less energy are able to produce less product.
Answer:
A
Explanation:
because a enzyme simply speeds up a reaction and only does that by pressure and stress not by doing chemical changes
The statement which best explains the importance of enzymes lowering the activation energy necessary for chemical reactions to take place is: A. Reactions that require less energy to begin are able to occur more quickly.
A chemical reaction can be defined as a chemical process which mainly involves the continuous transformation or rearrangement of the ionic, atomic or molecular structure of a chemical element through a break down and formation of chemical bonds, in order to produce a new chemical compound.
As a general rule, the activation energy of a chemical reaction must first of all be reached by its combining chemical elements (reactants) before it can start or begin.
An enzyme can be defined as a biological catalyst that is used to speed up (increase) or catalyze (accelerate) the rate of a chemical reaction, by lowering (decreasing) the activation energy of its constituent chemical elements (reactants).
Hence, a chemical reaction that only require less energy to begin (start) are able to occur more quickly before those that require high energy.
In conclusion, the activation energy of a chemical reaction should be lowered in order for it to occur or take place fast (quickly) enough over a short period of time.
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How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible?
Smooth ice reduces the inertia of the hockey puck.
Smooth ice increases the force used to accelerate the hockey puck.
Smooth ice reduces the unbalanced forces that would slow the hockey puck.
Smooth ice decreases the reaction force that the ice exerts on the hockey puck.
It is important to keep the ice smooth on a hockey rink because this reduces the unbalanced forces that would slow the hockey puck.
Frictional forcesFrictional forces are opposing forces to the motion of an object on a platform.
In order to be able to pass a puck as quickly as possible on a hockey rink, there should be a minimal frictional force on the ice surface on which the puck moves.
With minimal opposing forces, the puck will move as unhindered as possible and passing as fast as possible would be easy.
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Answer:
C
Explanation:
What is one difference between natural selection and selective breeding? Natural selection involves humans, selective breeding does not involve humans. Natural selection does not involve humans, selective breeding involves humans. Natural selection and selective breeding both take place quickly. Selective breeding only involves plants, Natural selection only involves animals.
Answer:
natural selection and selective breeding both take place in both plant and animal......May be
How does the genetic diversity of the English bulldog relate to the breed’s future viability?
Answer:
This study examines genetic diversity among 102 registered English Bulldogs used for breeding based on maternal and paternal haplotypes, allele frequencies in 33 highly polymorphic short tandem repeat (STR) loci on 25 chromosomes, STR-linked dog leukocyte antigen (DLA) class
Explanation:
The mitochondria is known as the “powerhouse of the cell." Why?*
glucose is broken down into cellular energy (ATP).
lipids release energy as they form polypeptide bonds.
glucose is created through the process of photosynthesis.
proteins create energy as they are converted from sugars.
Answer:
The correct answer is - glucose is broken down into cellular energy (ATP).
Explanation:
Mitochondria is the double membrane cell organelle presents in all eukaryotic cells that produce the energy by the process of cellular respiration from the food to the cell to perform its day to day functions.
The cellular respiration is the process that involves the braking of the sugars into simple molecules and these catabolic reaction produce energy with CO2 and water as waste. The energy is stored in the form of ATP which is generated in the inner membrane of mitochondria. ATP is used by the cell to perform its function.
Thus, the prower house of the cell is mitochondria.
