Tropical rainforests make up what percent of Africa's landmass?

a.

about 5%

c.

about 50%

b.

about 20%

d.

about 90%

What three conditions are required for thunderstorms to form?

Which state produces the majority of fresh-cut flowers in the united states?

The arid regions of the world rely heavily on irrigation in order to grow crops. Which of these is the biggest consequence that occurs with excessive irrigation?

Which of the following is true about Earth's supplies of freshwater? a. Most liquid freshwater is stored in rivers and lakes. b. Groundwater is a significant reservoir of liquid freshwater. c.

Assume a warm air parcel, at sea level, has a temperature of 21°C (70°F) and begins to rise upward. Assume it becomes saturated at 1000 m (3300 ft) altitude, and continues to rise to 2000 m (6600 ft.) altitude.

Igneous rocks are made mainly of compounds of: carbon and hydrogen silicon and oxygen carbon and silicon carbon and oxygen

Which volcanoes in the world are located along converging plate boundaries

What was the capital city of the eastern Roman Empire

How does geography relate to land bridge

What is the largest religiois group in russia and the western republics