How does Volcano Reflects Environment

  The volcano has seperated three types of the Volcano, one is dormant Volcano doesn't active temporarily it doesn't change a lot by erosion. the another one is active volcano the magma keeps outbrusting, the last one is extinct volcano it doesn't move at all. Most researchers are care about there will have a serious problem if the dormant is regaining consciousness.   

Volcano

A volcano is a place on the Earth's surface (or any other planet's or moon's surface) where molten rock, gases and pyroclastic debris erupt through the earth's crust. Volcanoes vary quite a bit in their structure - some are cracks in the earth's crust where lava erupts, and some are domes, shields, or mountain-like structures with a crater at the summit.

Magma is molten rock within the Earth's crust. When magma erupts through the earth's surface it is called lava. Lava can be thick and slow-moving or thin and fast-moving. Rock also comes from volcanoes in other forms, including ash (finely powdered rock that looks like dark smoke coming from the volcano), cinders (bits of fragmented lava), and pumice (light-weight rock that is full of air bubbles and is formed in explosive volcanic eruptions - this type of rock can float on water). Volcanic eruptions can cause great damage and the loss of life and property. The Word Volcano:
The word volcano comes from the Roman god of fire, Vulcan. Vulcan was said to have had a forge (a place to melt and shape iron) on Vulcano, an active volcano on the Lipari Islands in Italy.

Extreme Volcanoes:
The largest volcano on Earth is Hawaii's Mauna Loa. Mauna Loa is about 6 miles (10 km) tall from the sea floor to its summit (it rises about 4 km above sea level). It also has the greatest volume of any volcano, 10,200 cubic miles (42,500 cubic kilometers). The most active volcano in the continental USA is Mt. St. Helens (located in western Washington state). The largest volcano in our Solar System is perhaps Olympus Mons on the planet Mars. This enormous volcano is 17 miles (27 km) tall and over 320 miles (520 km) across.
Reference: ( http://www.enchantedlearning.com/subjects/volcano/)

  This article writes the details of the volcano how the mountain create the radition, it will influence human's body. If people get too much, the gene will change. In the world war 2 American goverment attack enemy by nucleus in Vietnam.  It gives a big sequela to the local resident, people's body looks different from other country's people. Many people got the disease after the war. If the big volcano mountain is outbrusting, the environment will cover a lot of radition. The researcher indicated that they can not predict how long we should wait before the radition vanish. The another important thing is we have to avoid getting wet in the rainn because the wheather has already got pollution. the rain is not healthy for our body, it makes people balding easily.