Water Vapor and Carbon Dioxide
Io, the moon of Jupiter.
around plate boundries.
Most volcanoes form along the edges of Earth's tectonic plates. Also most volcanic eruptions are preceded by earthquakes.
Freon and similar gases like chlorofluorocarbons and halons have only a small influence on global warming. They are much more important for destroying ozone in the ozone layer. Most of these gases are no longer emitted into the atmosphere, but they have a life span of up to 70 years, so they are still damaging ozone. Scientists hope the ozone layer will have repaired itself by 2060.
Most earthquakes occur on plate boundaries such as Japan and Chile and most volcanoes occur in diverging plate boundaries like Dallol and Iceland and the Pacific Ring of Fire like Ecuador and Indonesia
Water vapour (steam) Sulphur dioxide Carbon dioxide Carbon monoxide
the most common structure of volcanoes is Yur MoMSz !
The most notable gases that come out of volcanoes are sulphur dioxide, carbon dioxide and water vapour.
METHANE
Carbon is the gas most emitted in fridges, automobiles, factories, etc. This leads to the pollution.
China is now the biggest emitter. The United States is the country that has emitted the most greenhouse gases.
There are several causes of volcanic eruptions. Some of the most common are the buoyancy of the magma, pressure form the gases in the magma, and a new batch of magma entering an already filled chamber.
Explosive volcanoes are most common at subduction zones.
Nitrogen and Oxygen are the most common gases in the atmosphere.
Carbon Monoxide is the most common gas emitted from a car.
I think it is carbon dioxide.
Volcanoes emit a mixture of gasses. Water vapor is the most abundant, but carbon dioxide, sulfur dioxide, and hydrogen sulfide are often major components. Many other gasses are present in smaller amounts. The relative abundances vary from one volcano to another.