Are cells only found in pairs because single cells cannot exist independently

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.

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Nucleic acids offer variability because they contain alternate forms of genes called .