You are presented with the question "_ are passed from lower to higher trophic levels" and the following answer choices: 
- fossil fuels
 - rays or beams
 - nutrients
 - environment
 - animals
 - heat produced
 - Most plants
 - Light

Now knowing that energy is passed up a food chain or web from lower to higher trophic levels and an example of chemical energy is food nutrients, choose the best answer.


 

   nutrients      