Why is photosynthesis broken down into two separate steps/stages?

Sweating and breathing is an example of differentiation specialization maintaining homeostasis metabolism

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.

According to this food web which of the following would be considered primary consumers