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

Select the correct answer from each drop-down menu. this map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shows a decrease in precipitation, and blue shows an increase. the maps differ based on the predicted levels of greenhouse gas emissions. the maps show that northern areas should get . southern areas will likely get . to use these maps to prepare for natural disasters in the great plains, scientists need to ask, ?