This is the document to the assignment. I answered a few but id appreciate revisions if i was wrong.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

What element is able to combine with itself and hydrogen to form large molecules ?

What type of pollution does household garbage cause