Question

Which of the following can cause a population to decrease in size?

A Lack of rain
B. More births than deaths C. Plentiful food supplies
D. Organisms moving into an area, but not out.

Answer 1

If it’s only one choice then the answer is D because if a bunch of bears moved into a city, people would leave the city.

If it’s more than one choice then the answers are A and D because lack of rain can cause droughts which many people don’t want to live through.

Answer 2

D

Step-by-step explanation:

because when some organisms will move from one place to another the number of population will decrease