I just need 7,8,and 9 thanks

How do chloroplasts set plants apart from other living things

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

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.