The answer is the physical changes that occur in the body as sexual development is stimulated by hormonal changes. The hormonal signals are produced by the brain to the gonads: the ovaries in a girl, the testes in a boy. In response, the gonads produce hormones that stimulate libido and the growth, and the respective physical characteristics associated with either sex.
Explanation:
The ways in which an element—or compound such as water—moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.
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Intro to biogeochemical cycles (article) | Khan Academy
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If sugar concentration within a cell is high/rises, then water will enter the cell increasing the volume of cytoplasm within the cell and hence the volume/size of the cell itself;
Alternatively, if the sugar concentration within a cell is low/falls, then water leave the cell decreasing the volume of cytoplasm withing the cell and thus the cell will get smaller.
Answer:
At almost the opposite point on the Earth's surface, the "P" waves reappear. The shadow zone exists because the waves are refracted as they pass through the boundary between the mantle and the core and are diverted from their original paths.
