samiyas50
contestada

In a food chain, if an arrow points from a robin to a worm it means that...
A. Robin eats the worm
B. The worm eats the robin
C. They are in a symbiotic relationship
D. Bioaccumulation

NOTE: It doesn't mean the other way around such as worm -> Robin. Its Robin -> to Worm. (Just to clarify since I was confused about this.)