Respuesta :

Answer:

It got it's name because when a population is growing, there are more babies being born than there are people dying.

Explanation:

Answer:

It got its name because it is in the form of a triangle because when a population grows it forms the shape of a triangle.

Explanation:

The population pyramid is used to see how much population there is in an area by age and gender.

(Have a great day!)

(also could not find when the population pyramid was made into that name)