Answer: The body maintains homeostasis by positive and negative feedback mechanism.
Explanation:
The body maintains the internal temperature and metabolism with respect to change in environment.
In case the temperature outside is very cold and the body starts shivering by the movement of skeletal muscles, this is done to maintain the temperature inside body. This is positive feedback.
When the temperature inside the body is maintained, then body stops shivering. This is negative feedback.
This is how the body maintains homeostasis.
-because distinct populations of living things exist due to barriers to reproductive change.
-because fossils may be classified into distinct taxa due to the persistence of gaps.
The two reasons why the gaps among existing organisms, as well as the fossil records have remained after hundreds of years of research are because of distinct populations of living things exist due to barriers to reproductive change and because fossils may be classified into distinct taxa due to the persistence of gaps.
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Answer:1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic
Explanation:
Automatic Nervous system
In human, the automatic nervous system is part of the peripheral
nervous system and it consists of the sympathetic division and the parasympathetic
division. Automatic nervous system is regulated by hypothalamus which
controls our internal organs and glands such as blood pressure, breathing, pulses
and arousal in response to emotional circumstances.
