Answer:
cellular respiration...that's breathing out of humans
and through human activities like burning of fossil fuels...
False,
In order to start labor, estrogen increases and progesterone decreases.
Estrogens are a class of hormones that are essential for women's healthy sexual and reproductive development. They are sex hormones as well. The majority of estrogen hormones are produced by a woman's ovaries, however minor quantities are also produced in modest amounts by the adrenal glands and fat cells.
Progesterone is a member of the progestin drug class (female hormones). By lowering the level of estrogen in the uterus, it functions as a component of hormone replacement treatment. By substituting for the natural progesterone that some women lack, it helps to initiate menstruation.
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B..............................
More variation assists with survival. It increases the chance that at least some offspring of a parent survive.
Answer: The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism
