Which of the following did agriculture help reduce? (Select as many a necessary)

Disease
Competition
Predators
Impact of food availability

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!

Do you think that outside cultures have enriched or detracted from the cultures and peoples of the african continent? how so?

The hawaiian islands are associated with what type of volcanism? intraplate volcanism volcanism at a divergent plate boundary subduction zone volcanism volcanism at a convergent plate boundary