Which circumstance can cause negative population growth? O A. The death rate is higher than the birthrate.
OB. The emigration rate is lower than the birthrate.
C. The birthrate is higher than the death rate.
O D. The immigration rate is the same as the birthrate.

A because if more people are dying than being born, you can’t make up the numbers for the loss of lives if there’s not enough babies being born to fill up those numbers so you’re losing more people which would result in negative population growth(I hope that made sense)

He used pea plants to study the patterns of heredity.