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Airida [17]
3 years ago
6

Does any tundra lie within the United States? If so, where?

Biology
1 answer:
JulsSmile [24]3 years ago
4 0

Answer:

Parts of the U.S. state of Alaska and the countries of Canada, Greenland, Iceland, Norway and Russia are all in the Arctic tundra biome. Regardless of how cold and bleak the weather may be in the northern contiguous states in the middle of winter, technically, the tundra does not extend below northernmost Canada

Explanation:

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Duplication of chromosomes occurs during S phase of the cell cycle. Duplication requires the separation of complementary DNA str
frozen [14]

Answer:

Some statements of the question are missing but it can be understand as the Hydrogen bonds are Easy to break, Less amount of heat required, Less amount of enzyme needed and Can be broken by mild concentration of enzyme.

Explanation:

Weak bonds like hydrogen bonds are found to beneficial in some situations. During the duplication of chromosomes which occurs in S phase of cell cycle the DNA replicated. This replication is facilitated by separation of the two strands of DNA and formation of complimentary strand on the two primary strands. The enzymes involved in the process of separation of strands are DNA helicase and Topoisomerase mainly. As the bonds between the strands are weak hydrogen bonds, the enzymes function effectively without requiring extra heat or more saturation. It will found to be difficult if those bonds will be covalent bonds because they are much stronger than hydrogen bonds and are not easily broken by these enzymes. Extra processes will be required to break those strong bonds.

5 0
3 years ago
What is the major cause of the decrease in terrestrial vertebraes throughout the world.
garik1379 [7]

Answer:

The big cause in the extinction of many terrestrial vertebrates species is the hunting while the second cause is the habitat change. ... Hence if the habitat change, they are unable to survive and their population size will decrease.

Explanation:

4 0
3 years ago
You have adopted a gray mouse, which you know is a wild type phenotype. When crossed with a white mouse, your gray mouse has a f
sashaice [31]
Assuming the white phenotype is recessive. white: gg
I think the gray mouse is Gg because the offspring were pretty equally distributed in terms of color. See the punnet square below.
g g
G| Gg Gg
g| gg gg

If the Gray phenotype is recessive, then gray: ww but only if white is Ww because its about 50% chance for both.
3 0
2 years ago
10. Many trees in temperate environments have broad, flat leaves. How does this leaf structure support the function of obtaining
Tpy6a [65]

Answer:

A larger surface area allows more light to reach the mesophyll where photosynthetic cells are located.

Explanation:

7 0
3 years ago
Why is it important that living organisms not reach equilibrium in the concentrations of oxygen and carbon dioxide?
Mashcka [7]

Answer:

The living organisms must not reach equilibrium in the concentration of oxygen and carbon dioxide so that the Exchange of gases continues . Otherwise respiration and photosynthesis will stop.

Explanation:

  • Gases move along the concentration gradient i.e. from their higher concentration to lower concetration.
  • If living  organisms reach a equilibrium of carbon dioxide and oxygen concentration, then The gases will not move in and out of the cells.
  • This is because at state of equilibrium the concentration of gases on both side become equal and the movement completely ceases.
  • If gaseous exchange in the body stops the process of respiration and photosynthesis in Plants and respiration in animal will completely stop.
8 0
2 years ago
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