Which of the following spread the plague?

What was the most important consequence of the large-scale ecological changes in africa two hundred thousand years ago?

Conflict often developed between and the pope over how much influence the pope had over choosing local church officials. fill in the answer! like i mean tell me the answer! i am desperate! its the last question of the test so ! asap

When using the scientific method, what should be the first step? a.) gathering information on the problem. b.) stating the problem. c.) analyzing and interpreting data.