Use your completed student guide for this lesson to answer the following question. what caused prehistoric people to drastically change the way they lived?
a. climate change
b. fire
c. rivers
d. all of the above

What's a recharge area? a. the part of an aquifer where groundwater meets a lake or stream b. the part of an aquifer where surface water reaches the water table c. the part of an aquifer that's located between two aquicludes d. the part of an aquifer that's located at a lower elevation