What did early humans have to do in order to live in one place?

I need help:(

They needed water from rivers, lakes and puddles from the rain. The other thing they needed to survive was tools and these species was among the first to make the transition to stone tool making which they used to hunt large animals.

3. learn how to plant and harvest food

Explanation:

If you look in lines 3-4, it states, "They later learned how to plant and harvest food. This enabled them to live in one place." These two lines give you your answer.

the answer to the question is d. i took the test a second ago and got a 100 on it. hope this .

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.