You are presented with the question "Where does energy enter into in the form of sunlight and chemical compounds?" and the following answer choices: 
- sun
 - science lab
 - biomes
 - orchids
 - photons
 - deserts
 - black hole
 - trees

Now knowing that energy enters ecosystems in the form of sunlight or chemical compounds and biomes are global ecosystems, choose the best answer.


 

   biomes      