When is facilitated diffusion necessary? a) when the molecules are too large b) when the molecules are insoluble c) when the direction of movement is opposite to natural diffusion c) none of the above

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).

explanation:

okay now i don't know this but for the pints nothing else to say bye