Answer: Because of reduced blood supply
Explanation:
The normal heart has low pyruvic acid to lactic acid ratio which shows the heart is working properly and has no problem in it.
The heart with low pyruvic acid to lactic acid ratio shows that it has some respiratory problem and does not have adequate oxygen supply.
Even the person having very low pyruvic acid to lactic acid ratio shows respiratory problem.
C) Tundra without a doubt, the tundra biome is very cold year-round and, in some cases especially in Antarctica, can has no visual of the sun for months at a time.
The human integumentary system in body helps regulate body temperature through its compact association with the sympathetic nervous system (SNP), the division of the nervous system involved in our fight-or-flight responses. Hair can be curly, strait, or wavy, it can also be rough, smooth or silky. But the main function of the hair is to cover or insulate our body. It helps regulate body temperature. It also diverge a person's sweat or perspire.
<h3>
What is sympathetic nervous system?</h3>
The sympathetic nervous system is constant monitoring body temperature and start appropriate motor responses.
For example, the sweat glands, accessory structures of the skin, release water, salt, and other substances to cool down the body when it becomes warm.
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Answer:
https://quizlet.com/136747563/chapter-10-biology-notes-flash-cards/
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Explanation:
C. nucleus is the part of the atom that has most of its mass