How did the population pyramid get its name?
please helppp :(

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

Explanation:

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)

answer is  

loa ≅ lma

to prove that the triangles are congruent using the aas congruence

because the two particles have an equal charge, the charges will cancel out and give the atom an overall charge of 0. so, if at atom has 35 protons in the nucleus, we could expect it to have 35 electrons orbiting that nucleus.