In a river containing a large number of organisms that prey on fish, wha would most likely ensure the survival of the fish?

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

What are the characteristics of living things