Fact 1: Energy enters ecosystems in the form of sunlight or chemical compounds.

Fact 2: Biomes are global ecosystems.

Given the two facts above, answer the question "Energy enters what in the form of sunlight or chemical compounds." with the following options: 
- biomes
 - fire
 - light
 - Energy.
 - Energy
 - LEDs
 - propagate
 - photons


 

 biomes        