Which of the following is an example of how people modify the environment in Africa? i. cutting down trees in order to plant crops or build homes ii. building a dam on a river iii. allowing herd animals to graze on native grasses

Which of the following situations best demonstrates the principle of separation of powers in the u.s. government? a. the president can veto laws passed by the legislature. b. the courts must approve constitutional amendments. c. states create their own educational policies. d. members of the legislature are elected by voters.