Viruses can transfer genetic material between cells by select one: a. acting like a syringe that sucks dna out of one cell and injecting it into another b. infecting a cell, picking up pieces of the host dna, replicating, and then infecting other cells c. physically linking two cells d. causing mutations inside a host cell

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.