Nutrients move through ecosystems in different ways. Which nutrient cycles through organisms, rivers, rain, and the atmosphere?

If the birth rate of a population of dolphins is 2.0, the death rate is 0.5, and the population size is 100, what is this dolphin's population growth?

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.

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms