When geologists refer to the Big Five what are they referring to?

The troposphere is the lowest layer of earths atmosphere how does temperatures change with altered to in the troposphere.

Explain how the shape of a river's stream bed can affect the river's speed and its power to cause erosion.

What occurs when plates converge?

A forest has fertile soil and light is able to penetrate the canopy resulting in richly diversified understory vegetation and stratification of animals. What type of forest is this?

Is Brazil a peninsula?

What is other name given to el nino

N 1991, what prompted a huge uprising in the Balkans causing ethnic squabbles and general tension?

Factors that contribute to people becoming refugees?

How does a large body of water, such as an ocean, influence climate

The number of elected officials who are African Americans a) has risen dramatically at all levels of government b) has grown at local and state levels, but not federal c) has been shrinking since 1990 d) Grew after 1964 until about 1990 and then