Many materials can be recycled, but other materials cannot. if a material cannot be recycled, what happens to it after it is used by humans?

Give the biological term for: structures that display characteristics of living organisms only within living cells

Sediment layers stop lateral spreading when: they encounter a barrier they encounter an opposing current they run out of additional sedimentary material

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.