How does the bone protect the immune system?

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The bone marrow(which is found in bones) produces cells called lymphocytes which is an essential part to the immune system. The lymphocytes circulate in your blood, and there are 2 types of lymphocytes: T and B cells. The B cells produce molecules that destroy viruses or bacteria

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).