How Do Volcanoes Affect The Atmosphere Of Earth?

The current earth’s atmosphere is made up of Nitrogen (N2), Oxygen (O2) and a small amount of other gases. However the early earth which was formed 4.5 billion years ago was made up of Ammonia (NH4) and Carbon Dioxide (Co2). 4 billion years ago the world was covered with volcanos. The volcanoes released Carbon Dioxide (CO2) methane (CH4) and water vapour. The oxygen levels were 0.000%, also meaning no oxygen. 3.2 billion Years ago life of bacteria was forming and increasing. This made food by breaking down available nutrients. This produced more oxygen and made the oxygen level increase slightly to 0.001%. 600 million years ago oceans were formed from water vapour and made the oxygen levels increase even more to 0.21%. As soon as vegetation grew the oxygen levels rose dramatically to 2.1%. The earth in the present day, oxygen is now at. Roughly 21%, nitrogen at 78% and 1% of other gases. Carbon dioxide levels though have gone up recently. The proportion of Oxygen …show more content…
One of the factors are volcanoes, volcanoes effects the landscape because they are formed by tectonic plates either diverging which means moving apart or converging which means moving together. Also volcanoes have changed the surface by the volcanic activity, resulting in damage to the environment around them. Volcanoes effect the atmosphere by producing carbon dioxide, sulphur dioxide and methane into the atmosphere. This means that because of the number of toxic gases are escaping into the air they can effect the environment. There are different gases that causes damage to the environment and its atmosphere. For example Carbon Dioxide from the volcano adds to the greenhouse effect. Sulphur Dioxide causes the environment problems such as acid rain. Also dust from the volcanoes reflects heat radiation from the