Which of the following are examples of physical systems? a. the gulf stream b. the lincoln tunnel c. the amazon rain forest d. the san andreas fault e. the california gold mine

What is the difference between external & internal migration

Select the best hypothesis explaining why countries may have preferred communism. communism promised jobs after the insecurities of war. communists forced the people to do what they said. communism was fueled by a dislike for democracy. communism provided economic freedom for businesses and workers.

What is most likely the effect of unrestricted hunting of gray wolves on the food web of the region