Fact 1: Energy is passed up a food chain or web from lower to higher trophic levels.

Fact 2: Each trophic level has less biomass and a loss of energy content.

Given the two facts above, answer the question "what happens to energy as it goes up levels?" with the following options: 
- Decibels
 - heat produced
 - decreases
 - Evaporation
 - It expands
 - radiation
 - glucose
 - dehydration


 

   decreases      