Under the leadership of mikhail gorbachev, the doctrine of perestroika called for which of the end of exam following? a. openness in communication b. more local control and free-market practices c. a central banking system under private ownership d. democratic elections

Why are nongovernmental organizations important? check all that applya. they are private institutions that aid the work of government.b. they often fill in gaps between government-funded services. c. they are private institutions that attack government policyd. they citizens by acting as watch dogs over elected officials

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

What benefits does this type of farming have?