Oxygen
neptune is a gas giant. gas giants do not have volcanos.
The Victorian Era was in the early 1900's. The most used form of lighting during this era was gas lighting. Candles were still used at this time as well.
Unless changed during current times; CS was SOP for training men during the Vietnam War era. To include the gas chamber.
Companies could charge as much as they liked.
I G Farben produced Mustard Gas (bis(2-chloroethyl) sulfide) during WW 1. They went on to produce other poison gasses, such as Phosgene, and during WW 2 produced Nerve gasses such as Tabun, Sarin, and Soman.
Oxygen
Earth forming from a mass of dust and gas :)
Volcanoes can produce lava, ash, and gas.
It is very empty and only single-celled organisms were present in the Precambrian era. No animals were living on land because of the poisonous gas in the air.
the gasses were dissolved in the lava until the pressure was released near the surface.
The gas giants have no volcanoes; they are composed entirely or almost entirely of gas, so there is nothing to erupt. However, it should be noted that some of the satellites of the gas giants do have volcanoes.
oxygen
All volcanoes are made of gas and magma.
Gas is what gives volcanoes most of their power. One of the reasons this happens is because the gas keeps expanding.
Yes. Volcanoes are very dangerous. Depending on the type of activity volcanoes can produce toxic gasses, lava flows, heavy toxic ash, mudflows called lahars, and fast moving avalanches of hot ash, rock, and gas called pyroclastic flows.
because they do
The smelly gas that often accompanies active volcanoes is known as fumarole gas. This has the same odor as rotten egg.