What does sexual development encompass

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

When species lose their habitats they may..

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.