What similarities are there in growth of the human population compared to animal/plant populations?

The similarities in the population growth of humans with respect to plants and animals is that, in the three cases, the growth occurs exponentially with respect to the initial number of specimens: thus, if there are 100 humans, 50 of each gender, 50 new individuals may appear; the same happens with animals and plants: each species is reproducing exponentially to the procreative pairs that previously existed.

replace   c   with   a   and simplify.

a = c , b = a, q = n , 2 , a = c , 900 b= a , 700 , q = n , 600 , 2 = b o t h , b = a , q = n