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lutik1710 [3]
2 years ago
12

Which of the following best defines change in a species over time?

Biology
1 answer:
Firlakuza [10]2 years ago
4 0

Answer:

Evolution

Explanation:

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Explain why there is a difference in the amount of oxygen taken in at rest and during the vigorous activity. ​
s2008m [1.1K]

Answer: During vigorous exercise your breathing rate increases in order to intake more oxygen

Explanation:  during vigorous exercise / activity the body needs more oxygen in order to produce energy so your breathing rate increases in order to reach the demand of more intake of oxygen , and your muscles work harder due to an increase in oxygen demand and how much oxygen the muscles take from the blood during vigorous exercises , BUT during rest we have normal rate of oxygen intake because your body is at rest at that moment .

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6 0
2 years ago
What type of stress occurs when a rock mass is pushed in parallel and opposite directions?
natima [27]

Answer:

Shear stress

Explanation:

Shear stress is a type of stress that occurs when a rock mass is pushed in parallel and opposite directions.

7 0
2 years ago
What is an ecosystem engineer?
AysviL [449]

Answer:

Ecosystem engineers are species that modify their environment in a significant manner, creating new habitats or modifying existing ones to suit their needs.

7 0
2 years ago
What is the cell ? How many champers did have the heart?
True [87]

Answer:

In biology, the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. ... Parts of a cell. A cell is surrounded by a membrane, which has receptors on the surface.

The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated.

Explanation:

6 0
2 years ago
How might you alter a trna so that it inserts an alanine into a polypeptide for which a lysine is coded?
castortr0y [4]
TRNA stands for transfer-RNA which is used in the process of protein synthesis or translation. tRNA is a unique clover leaf like structure that has 4 arms- amino acid acceptor site (acceptor arm), D loop, T psi C loop and anticodon loop. It also has a small variable loop. The anticodon loop consists of a sequence of 3 bases that is complementary to the 3 bases present of mRNA to be translated. A tRNA for alanine will have an anticodon for alanine while a tRNA for lysine will have an anticodon for lysine. For a tRNA to insert an alanine in place of lysine in a forming peptide, the anticodon and the amino acid acceptor site should be altered so that it accepts lysine in place of alanine and add it to the growing polypeptide.
7 0
3 years ago
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