Other contributors have said "Decaying animals sometimes leave behind carbon?" is the same question as "What do decaying animals sometimes leave behind?" If you believe that these are not asking the same thing and should be answered differently, click here

What do decaying animals sometimes leave behind?

Answer:

carbon

Note: There are comments associated with this question. See the discussion page to add to the conversation.
First answer by Kenny 6. Last edit by Kenny 6. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].