Fact 1: Many consumers feed at more than one trophic level.

Fact 2: Each step along a food chain is known as a trophic level.

Given the two facts above, answer the question "Many consumers feed at more than one what along a food chain" with the following options: 
- humans
 - cacti
 - goats
 - step
 - scale
 - Length
 - a path
 - Energy


 

    step     