In young mountainous regions, the continental crust is sometimes thinner, sometimes thicker than averagethicker than averagethinner than averagethe same thickness as in other areas//the answer was "thicker than average"

This is a coral reef ecosystem. many biotic and abiotic factors affect the health of this ecosystem. which set correctly pairs a biotic factor and an abiotic factor?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

What materials must dams have to produce electricity, and what must occur?