1. Simple diffusion is defined as the movement of
OA) molecules from areas of higher concentration to areas of lower
concentration
B) molecules from areas of lower concentration to areas of higher
concentration.
C)
water molecules across a membrane.
D) gas molecules across a membrane.
OE) gas or water molecules across a membrane.

A) molecules from areas of higher concentration to areas of lower concentration

Explanation:

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an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

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