Questions with the keyword 'chain'

• why have animals like salmon not adapted to become more predatorial instead of being at the bottom of the food chain by pooger12 to Blaire . Comments: (No comments so far)
• is it possible for us humans to be on a food web or food chain? by dmath56 to Blaire, Elizabeth, Jenny, Shona, Simon . Comments: (so far, 4 comments)