The organisms on earth do not run out of raw materials because: a)every food chain begins with a producer b)all raw materials are recycled by various processes in an ecosystem c)all populations within a community interact d)energy cannot be created

answer; i believe that the correct answer is (lung);

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).