Rats most easily learn to associate nausea-producing radiation treatments with
1) loud sounds. 2) bright lights. 3) novel tastes. 4) high-pitched sounds.

How does the principle of federalism affect the u.s. government? a. it guarantees that the united states will always be a representative democracy b. it ensures that the state governments have greater authority that the federal government c. it creates both separate and overlapping powers for the federal and state governments d.it divides the federal and state governments into three branches