Answer:
autonomic nervous system (ANS)
Explanation:
The Autonomic Nervous System (SNA) is the part of the nervous system that controls and regulates internal organs such as the heart, stomach and intestines, without the need for conscious effort by the body. It is part of the peripheral nervous system (which includes the Somatic Nervous System or SNS and SNA) and for this reason it also controls some of the body's muscles.
Thus, most organs are controlled by the sympathetic and parasympathetic nervous system. Sometimes both have opposite effects on the same organ. For example, the sympathetic system increases blood pressure while the parasympathetic system decreases it. In general, both systems work together to ensure that the body responds adequately to different situations.
Variety leads to advancement, lack of variety would stop advancement in society.
Therefore, variety is important in a population as it leads to higher possibilities for advancement and evolution within a species.
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There are many theories about why living thins sleep, however, scientists are still unsure about what the answer to this question may be. Some say it is because of its restorative powers - after a good night's sleep, you feel rested, and all your brain and bodily functions work better than when you are exhausted. During sleep, some rejuvenating and growth hormones are created, which again adds to our advantage. You also relieve stress that has accumulated during the day. These are some of the reasons why we have to sleep.
Noun, Genetics. 1. the principle, originated by Gregor Mendel, stating that during the production of gametes the two copies of each hereditary factor segregate<span> so that offspring acquire one factor from each parent. Expand. Also called Mendel's first law, Mendel's law.</span>
Greenhouse effect- The exchange of incoming and outgoing radiation that warms the Earth
Gases- Carbon dioxide, methane and nitrous oxide
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