at the poles the earth's temperature or just temperature in general is much colder than anywhere else. at the equator the temperature is most always very warm and humid also known as a tropical climate. then in between the poles and equator there are the seasons. the seasons are spring, summer, fall, and winter. the reason there are seasons in between the poles and equator is because the places in between the poles and the equator are always in a fluctuating position with the sun hitting the places between the poles and the equator all the time.
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The cell membrane is primarily composed of a mix of proteins and lipids. Depending on the membrane’s location and role in the body, lipids can make up anywhere from 20 to 80 percent of the membrane, with the remainder being proteins. water, oxygen and carbon dioxide goes in the cell membrane
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Researchers found that chronic exposure to a stress hormone causes modifications to DNA in the brains of mice, prompting changes in gene expression. The new finding provides clues into how chronic stress might affect human behavior.