What is population?

A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

a community is a group of people living in the same place or having a particular characteristic in common.

A biome is a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.

Weather can affect an animals habitat and how it lives cause if it rains a lot they'll probably try to stay in shelter.