How might green roofs and other green spaces help reduce the effect that humans have on the environment with respect to deforestation, soil erosion, and desertification?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.