How can the existence and prevalence of human sacrifice among the aztecs be explained

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

When your organs don't receive enough blood, they begin to a. shut down b. speed up c. inflame d. dry out

Compare and contrast between mitigation and adaptation responses to climate change. this is for my environmental science class. i need 200 words by tonight.