Which particle flows to produce electric current?

How do earth’s systems interact with each other?

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 is not an explanation for why new approaches began to emerge in the 1950s and 1960s challenging the dominance of the psychodynamic and behaviorist approach