What hormone triggers hunger?
glucose
progesterone
testosterone
ghrelin

Ghrelin (I hope this helps!!)

Explanation:

Ghrelin has numerous functions. It is termed the 'hunger hormone' because it stimulates appetite, increases food intake and promotes fat storage.

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the declaration states, “we hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty, and the pursuit of happiness….”

answer; limbic system;