What are the names of the other two layers of the Earth, and what are they made of?

I'm just going to tell you all the layers of the earth in order

1. Crust

2. Mantle

3. Outer Core

4. Inner Core

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.