Question

The figures below refer to a herd of water buffalo.

Birth rate = 35
Death rate = 7
Immigration = 4
Emigration = 17

What is this population growth?
population increases by 41
population decreases by 15
population increases by 15
population decreases by 24

Answer 1

Net change = births + immigration − deaths − emigration = 35 + 4 − 7 − 17 = 15.
So the population increases by 15.