4. A natural resource is best defined as any naturally occurring material that is
A. used by people
B. mined from Earth
C. unlimited in quantity
D. left untouched in nature

the movement of aircraft through clouds can even cause lightning strikes. a single lightning event is a "flash", which is a complex, multi-stage explosively ejected.

explanation:

and the person below goggled it.

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i think that the answer is c

give me abc and i will get it for u.