What did hunter-gatherers discover to them adapt to their environments

They found that the waste that they were throwing away were growing, because of the seeds.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

what are the answer choices?