Which part of a tropical rain forest receives the least amount of solar radiation? 

A)  the emergent layer 
B)  the canopy 
C)  the understory 
D)  the forest floor

Solar Radiation

Electromagnetic energy emitted by the sun, including visible light, ultraviolet light, and infrared radiation, which provides the primary source of energy for Earth's climate system.

Tropical Rain Forest

A hot, moist biome found near the Earth's equator, characterized by high annual rainfall and a diversity of plant and animal species.

Emergent Layer

The topmost layer of a rainforest, where the tallest trees extend above the forest's general canopy, receiving most sunlight.