Speculate about some of the possible consequences that a great and prolonged increase in explosive volcanic activity might have on each of Earth's four spheres.

There are currently a number of active and erupting volcanos. I believe that they are contributing to global warming and man is also contributing to global warming. We are already seeing melting of polar ice and polar bears are being threatened because their environment is changing and they are having a difficult time adapting. I come from Hawaii which has an active volcano. The volcano is located on the island of Hawaii where it has already claimed hundreds of miles of homestead. It is also flowing into the ocean. I live on the island of Oahu and often times the volcanic ash (called Vog) is carried over in the southern winds. The most serious affect is on the lungs and eyes. I have trouble breathing when Vog comes and I feel fatigued. I believe long term volcanic eruptions will change our world for the worse along with other contributors to global warming.