What are the three processes that can cause major changes for a population?

A. crude birthrate, crude death rate, demography
B. fertility, mortality, and migration
C. infant mortality rate, fertility, and crude birthrate
D. life expectancy, life span, and gross migration rate

is this B?

Right.

I agree ... but it'd be interesting to know how any "-rate" is a process!!

thank you!!! :3

You're welcome.

Yes, the correct answer is B. The three processes that can cause major changes for a population are fertility, mortality, and migration.

To arrive at this answer, you can break down the options and see which one best fits the question.

Option A includes "crude birthrate," "crude death rate," and "demography." While crude birthrate and crude death rate are indeed important factors in population changes, "demography" is not one of the three processes mentioned in the question.

Option C includes "infant mortality rate," "fertility," and "crude birthrate." While infant mortality rate is a subset of mortality, it is not one of the three processes mentioned in the question. Therefore, this option is incorrect.

Option D includes "life expectancy," "life span," and "gross migration rate." While life expectancy and life span are related to mortality, they are not considered as separate processes that can cause major changes for a population.

Therefore, the correct answer is B.