Question

which two factors can both cause a population to increase?
birth rate and emigration
birth rate and immigration
death rate and immigration
death rate and emigration

Explanation:

Birth rate refers to the number of new individuals born into a population, which directly adds to the population size. Immigration is the movement of individuals into a population from outside, also adding to the total number of individuals. Emigration (individuals leaving) and death rate (individuals dying) decrease population size.

Answer:

birth rate and immigration