The central nervous system<span> (</span>CNS) is the part of the nervous system<span> consisting of the brain and spinal cord.
A. Brain
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Answer:
SUNLIGHT and PHOTOSYNTHESIS
An aphotic zone is a zone where light can be received from the sun (or other sources of light).
For example in the ocean, it will be the zone that begins a 200m deep and goes to the bottom of the sea.
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Answer:
Every cell in your body needs oxygen in order to live. The air we breathe contains oxygen and other gases. Once in the lungs, oxygen is moved into the bloodstream and carried through your body. At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide
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Explanation:
