briefly explain one important connection between the economic systems of the north and the south in the same period

Compare and contrast the environmental consequences of reliance on coal with reliance on petroleum.

Which statements describe continental crust? select the three correct answers. a-it is formed in all parts of the continents. b-it is made mostly of volcanic rock. c-it is destroyed by melting near the top of the mantle. d-it is less than 10 km thick. e-its ages ranges from very young to more than 4 billion years old.

Which tip applies to the aspire test and psat equally