Please help with bio 1 HW! what equation has 10 carbons and 21 hydrogens and ends with COOH?

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

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.

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.