Answer:
O To prevent certain ions and molecules from entering or exiting the celI.
Explanation:
The cell needs to keep a constant chemical composition on the inside in order to mantain homeostasis
Answer:
There have been glacial deposits founded in the tropics and coal founded in Antarctica. This supports the theory of the Continental Drift, because coal originates from tropical plants, which can only be founded in the tropics. Additionally glacial deposits can only come from Antarctica, proving the theory.
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The substances that are involved in the control of sperm and egg productions in humans are the Hormones. They play important role in regulating both female and male reproductive cycles. The primary hormones involved in male reproductive system are follicle stimulating hormone, leutenizing hormone and testosterone while in females reproductive system we have Gonadotropin releasing hormone, LH, FSH, estrogen, and progesterone. The entire reproductive systems are dependent on hormones in the stimulation and regulation.
The incabator temp. helps raise the tempature of the baby if it was pre-mature
