How to write an interpretation for a population pyramid? Teacher didn’t explain well and it’s due tomorrow

1) a general statement should be written regarding the “stability” of population
2) 1-3 statements regarding female/male composition
3) 1-3 statements regarding age composition
4) closing statement focuses in concerns population will have

Mostly confused on describing the “stability”, if someone could provide an example or just explain how to compose these steps that’d be great

Thanks :)