Answer:
The answers are:
letter B, domesticating animals and plants
letter D. learning to use fire
letter E. making tools
Explanation:
Long time ago, it was common for the early humans to travel from one place to another in a group. They did this in order to follow their food supply. In order to catch their food, they started making tools. Then, they discovered to use fire and so they started to eat food by cooking them first. It also kept them warm. So, this was how they adapted to their early environment.
However, they soon realized that they could control their food supply by planting and raising animals. So, this allowed them to stay in one place. This started the development of agriculture in the world.
Thus, this explains the answers.
