The answer is: the atmosphere gives us gravity.
The atmosphere contains the air we need to breathe.
The atmosphere blocks out harmful UV rays.
The moon’s atmosphere is very small, so it’s considered to not even have one. But the moon still has gravity. So the atmosphere does not = gravity.
The part of the atmosphere called the ozone layer helps form weather patterns and climate.
For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce. The circulatory system picks up oxygen in the lungs and drops it off in the tissues, then performs the reverse service for carbon dioxide.
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I can answer that but what is the choices?
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I pretty sure the answer is smallpox
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Dehydration synthesis is the process of joining two molecules, or compounds, together following the removal of water. When you see the word dehydration, the first thing that may come to mind is 'losing water' or 'lacking water.'