the region of the eruption get extremely heated.

excess production of carbon dioxide leads to the death of many people.
.Volcanic eruptions can have a devastating effect on people and the environment.
some of the negative effects are
1.Many lives can be lost as a result of a volcanic eruption.
2.If the ash and mud from a volcanic eruption mix with rain water or melting snow, fast moving mudflows are created. These flows are called lahars.
3.Lava flows and lahars can destroy settlements and clear areas of woodland or agriculture.
4.Human and natural landscapes can be destroyed and changed forever
However, unlike earthquakes, volcanoes can also have a positive impact on an area. These positive impacts can help to explain why people choose to live near volcanoes
some of the  positive effects are
1.The dramatic scenery created by volcanic eruptions attracts tourists. This brings income to an area.
The lava and ash deposited during an eruption breaks down to provide valuable nutrients for the soil. This creates very fertile soil which is good for agriculture
The high level of heat and activity inside the Earth, close to a volcano, can provide opportunities for generating geothermal energy.