What is the span (number of years shown) of this timeline​

D. latin america followed by africa

Well, a and b together would be negative. b alone would also be negative.

Its led to migrationits led to death 

Unique question.well, using science, you cannot create or destroy even if you do eat yourself so you would not grow twice as big, nor would you disappear. you would stay the same but change states potentially, or at least change your appearance (obviously).hope this . keep up these unique questions.