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sergeinik [125]
3 years ago
10

What is the function of nitrogen-

Biology
1 answer:
Effectus [21]3 years ago
8 0
I think the answer is C
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Biochemistry is the branch of science that explores the chemical processes within and related to living organisms. ... Biochemistry focuses on processes happening at a molecular level. It focuses on what's happening inside our cells, studying components like proteins, lipids and organelles.

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Which muscles assist in inhalation when running up the stairs? A) sternocleidomastoid, pectoralis major, scalenes B) sternocleid
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Sternocleidomastoid, pectoralis minor, scalenes

Explanation:

During normal inhalation, contraction of the diaphragm and the contraction of external intercostals expands the chest cavity. The increased volume of the thoracic cavity results in reduced alveolar pressure than the atmospheric pressure to facilitate the flow of air into the lungs in response to the pressure gradient.

During deep inhalation as it occurs when running up the stairs, the accessory muscles of inhalation also participate to increase the volume of the chest cavity. The contraction of scalene and sternocleidomastoid muscles increase the volume of the chest cavity further to create a greater drop in alveolar pressure.

During forceful inhalation, the sternocleidomastoid muscles serve to elevate the sternum, the scalene muscles serve to elevate the first two ribs while the pectoralis minor elevate the third through fifth ribs.

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3 years ago
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ratelena [41]
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Pluto crossed Neptune's orbit. However, their paths do not actually cross, they just swap positions. 

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How have some living things adapted to their eco system​
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The key to the adaptation of living beings on the planet is the adaptation to abiotic factors such as temperature, light, salinity, humidity; and to biotic factors, which are represented by the action of the other organisms.

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