Layer B would 'be'(get it??) would be the oldest of the two because it came before layer D. The second part to the question I don't understand.
Answer:
1. Humans burn up fossil fuels to release into the air and pollute it. we throw trash on the ground, we kill most of the animals that are endangered, and we cut down trees and kill habitats for animals.
2. They could burn Natural gas, kill less animals, use the trash cans and recycling bins, not cutting trees and killing habitats.
3.
4.
5.
Explanation:
I know because of my Dad, he tought me all of this stuff.
A prepared to take cover because if something does happen then to be under sometjing is the best thing to do
