The environmental change that play a key role in making human survival easier and bringing about the elliptical age is: A. decline in global sea level.
Environmental change can be defined as the change we experience in environment and this environment change can occur as a result of some factors which includes the following:
Decline in global sea level play a key role in making human survival easier as well as bringing about the elliptical age.
Therefore the correct option is A.
The missing options are:
A. decline in global sea level
B. end of the Ice Age
C. extinction of mammoths
D. increase in cave formations
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