What are a source of food for many fish species?
layers of fat bird species human species keystone species Organic compounds barnacles gastropod shells species of deer
A B C D E F G H
Sponges are also keystone species.
Keystone species are a source of food for many fish species.
What are a source of food for many fish species? (A) layers of fat (B) bird species (C) human species (D) keystone species (E) Organic compounds (F) barnacles (G) gastropod shells (H) species of deer