What is a fissure in the earth?

Its either a volcano or a geyser, depending on the substance emitted from it. Most times it could even just be a hydrothermal vent or geothermal fault.

High strength tremors shatter fault lines, creating a large eartquake to split the crust of the earth.

earth

If it were Jupiter we would all be dead.

On the surface we are in fact, in the atmosphere, we call this layer the Troposphere. the atmosphere extends to around 80 miles up, at that altitude the air is extremely thin, essentially you get to...