Answer:
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Explanation:
One of the most significant differences between the nervous system and endocrine system is that the nervous system uses electrical impulses to send messages through neurons while endocrine glands use hormones to send messages to the target cells through the bloodstream.
<span>The climate and the situation of the country or city that they live in.</span>
If you are talking about insects then they are called castes. hope this helps!
I need photos to see what the problem is.