Why is it important to understand challenges in a species environment in order to understand the species evolution?

It is important to understand the challenges in a species environment because it would help us to understand what the species should be call and why there here and what ever happens to the species of what it do or do not do, will help us understand species evolution.

Example: what we humans study animals we check what they go through just to know what they do, we do this because to see if evolution occur, evolution is important to see on other species to if the animal can act like a human or a human act like an animal, is like what we say now in days a monkey is going through evolution because they act like us humans and looks. This worry us cause many think the monkeys or gorrilas may take over the world or extinct us human is what there theory is. I hope you understood cause I been new this question since I was 7, your welcome by Titanium Chrome.