Geologists have evidence of an igneous rock formation under Earth's outer layer. Is it possible that material from this rock formation could ever form sedimentary rock on Earth's surface?

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water