Modern mixed economies that include free market principles as well as active government regulation of the economy are based on the theories of __. A. Milton Friedman
B. Adam Smith
C. Karl Marx
D. John Maynard Keynes

Soweto was the site of one of the that swept across south africa in the late 1970s. in his effort to end apartheid, desmond tutu turned to . the united states responded to south africa’s apartheid policy in the 1980s by .

Which factors add to the greenhouse effect and are caused by human activities?

Match the following items. 1 1 (4,4) 2. (-4,-2) 3. (3.-6) 4. (-4, 6) 5. (1,5)