You are presented with the question "what do ecosystems get energy from?" and the following answer choices: 
- colors of the spectrum
 - fossil fuels
 - during the day
 - our star
 - electromagnetism
 - In their leaves
 - rays or beams
 - sun's heat

Now knowing that most ecosystems get energy from sunlight and sunlight is a form of electromagnetic energy, choose the best answer.


 

     electromagnetism    