Scientists often replicate the experiments that other scientists have already performed. that is, they reproduce an experiment by using the same procedure and materials as another investigator.

Which of the following early north american cultures were known for building wigwams and longhouses? a. eastern cultures b. great plains cultures c. western cultures d. northern cultures

Match the following items. 1. free enterprise system 2. mixed economy 3. the former soviet union 4. land and capital (a) private and state ownership of business (b) factors of production (c) private ownership of capital (d) command economy

Montesquieu suggested dividing government into