Question

why do hurricanes lose strength when they move over land?
a they gain more energy from the ground
b the sun stops shining
c the air becomes warmer
d they lose their source of warm, moist air

Explanation:

Hurricanes get their energy from warm, moist ocean water. When they move over land, they lose this source of warm, moist air (which is essential for their strength - evaporation from warm ocean water fuels them). Option A is incorrect as land is not a source of energy for hurricanes. Option B is wrong because the sun doesn't stop shining when hurricanes move over land. Option C is incorrect as the air over land (especially compared to the ocean in the context of hurricanes) doesn't provide the warm, moist conditions that fuel hurricanes.

Answer:

D. They lose their source of warm, moist air