Students often remember more information from a course that spans an entire semester than from a course that is completed in an intensive three-week learning period. This best illustrates the importance of

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.

permafrost layer, it exists beneath a layer of soil, rock or sediment.

it should be d or b but i'm sure it's d