use the photo below to answer these questions

1) what is a trophic level?
2)what do energy pyramids represent?

3)Explain how energy limits the number of trophic levels in a food chain or web?

4)what is an autotroph?

5) what is a heterotroph?

6) how much energy does each trophic level of your food chain have from the questions above , if your producer starts with 100 units of energy?​