How do volcanoes change the atmosphere,hydrosphere,geosphere,and biosphere

Volcanoes effect the atmosphere by volcanic eruptions releasing lots of gases into the atmospheric, some of which pollute the environment and affect the atmospheric content

volcanoes effect the hydrosphere by a volcanic eruption can discharge pollution, found in the air, that can pollute water bodies that are located nearby the site of the volcano.It can effct the peoples water supply nearby

volcanoes effect the geosphere by areas around volcanoes have better soil.

volcanoes effect the biosphere by volcanic eruptions will destroy crops and plants. Without these plants, the Eco-system will be affected. Food webs will be affected. Soil, however, that are situated near volcanoes are generally more fertile than those found elsewhere. Also if water around life gets polluted it will also affect life.