<span>Nervous system is a network of specialized cells that monitors the internal and external environment and initiates commands through which the body reacts.
Nervous system is very important part of our body because it is the system which is controlling our body. If there is no nervous system we could not perform any function. It sends the message to and from the brain to all parts of body.</span>
The principal difference, however, between photosynthesis and respiration (plants breathing is called respiration) is that photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.
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Answer:
45
Explanation:
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