A) warm, moist air that cools as it moves down over a mountain, releasing moisture.
B) large mountain masses in the center of continents that restrict air flow.
C) ocean currents that heat and cool more slowly than do air or landmasses.
D) ocean currents that heat and cool more quickly than do air or landmasses.
E) cool, dry air that warms as it moves down over a mountain, picking up moisture.

A) Earth's natural curvature places the equator nearer to the sun.
B) the sun shines longer over the equator than it does over other parts of Earth.
C) sunlight strikes the equator relatively directly with little seasonal variation.
D) there are large oceans near the equator that absorb large amounts of heat.
E) Earth's rotation on a tilted axis creates more atmospheric friction at the equator.

A) savanna
B) northern coniferous forest
C) tundra
D) chaparral
E) arctic