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MAXImum [283]
3 years ago
13

If old mountains wear down over the course of millions of years, what is one of the primary reasons that mountains still exist?

Biology
1 answer:
navik [9.2K]3 years ago
7 0

Mountains still exist today because of the movement of tectonic plates.

<u>Explanation</u>:

  • Mountains are formed because tectonic plates smash into each other. Tectonic plates are present under the earth's crust.
  • Different kinds of stresses causes these plates to move and as a result, different kinds of mountains are formed.
  • Over the course of time, old mountains wear down. But new mountains continue to form because tectonic plates continue to move under the earth's crust.
  • These plates have been moving since the formation of the earth. This is due to geological activities that take place on the Earth's crust.
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Dang that’s hard I will have to come back to you on thid
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3 years ago
When children are young and go to the doctor, the doctor will give them booster shots. This re-exposes the children to a dead po
Monica [59]

Answer:

Active immunity

Explanation:

Active immunity is when the body makes its own antibodies to protect against the disease in the future. Passive immunity is when another person or animal's antibodies are introduced to produce immunity.

Hope this was helpful! :)

6 0
4 years ago
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You have mated a phenotypically wild-type female of the genotype Xy+w+Xyw to a male with the genotype XywY. You counted 2205 tot
Vinil7 [7]

Answer:

1.31 cM

Explanation:

Total offspring = 2205

Since two genes are involved, F1 progeny should have four types of combination. Out of them two are 17 and 12 which definitely means they are in lesser number. Since recombinants are always less than parental progeny in linkage, the given two types are recombinants.

Recombination frequency = (Number of recombinants / Total progeny) * 100

= [ ( 17 + 12 ) / 2205 ] * 100

= ( 29 / 2205 ) * 100

= 1.31 %

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Hence, distance between two genes = 1.31 cM

6 0
4 years ago
A scientist hypothesized that one species of dinosaur was the ancestor of a later species of dinosaur. She then found fossil evi
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8 0
3 years ago
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The pH indicator bromothymol blue is an alkaline solution and yellow is an acidic solution. A slight increase in acidity. Such a
spayn [35]

Water plants in the solution are placed under a bright lamp. Thus, option "B" is correct.

<h3>Explain your answer briefly?</h3>

As we know adding carbon dioxide in as solution result in the change of its acidity this is result in the indicator to change from blue to yellow. In the question, it is asked that what factors from the given option will cause yellow indictor to blue which means what factors cause the solution to be alkaline from acidic.

Placing the green water plants in the solution under a bright lamp will cause the is utilizing and remove present carbon dioxide in the solution and leads the to blue color from the yellow color of the solution.

Thus, this could be the answer.

The question is incomplete, however, the missing part is given as below:

A. Yeast cells and sugar are placed in the solution. B. Water plants in the solution are placed under a bright lamp. C. Algae are placed in the solution and left in a dark room. D. A person blows air into the solution through a straw.

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7 0
2 years ago
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