the gasses were dissolved in the lava until the pressure was released near the surface.
Volcanoes do not produce uranium.
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.
Gas is what gives volcanoes most of their power. One of the reasons this happens is because the gas keeps expanding.
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
plate boundaries can produce volcanoes
Oxygen
Volcanoes can produce lava, ash, and gas.
Volcanoes do not produce uranium.
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.
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.
plate boundaries can produce volcanoes
plate boundaries can produce volcanoes
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
convergent
No. Lava flow in a volcanic eruption is a factor of the temperature, chemistry, and amount of trapped gas in the lava. Highly viscous, felsic, gas charged magmas tend to explode upon eruption. Low viscosity, basaltic magmas tend to flow upon eruption.
Volcanoes did not produce oxygen in the Precambrian era. The composition of volcanic gases during this time period mainly consisted of carbon dioxide, water vapor, and sulfur gases, but minimal oxygen was present due to the lack of photosynthetic organisms producing it.