Scientists discover that the atmosphere of both the Earth and Mars contains nitrogen. They then conclude that the atmospheres of all planets must contain nitrogen. This is an example of:_______.
As earth consists of the 78% of the nitrogen that is an essential greenhouse gas acts as a layer that of the mars is about the 2.5% while that of the other gases planet has most of the carbon content and has hydrogen and helium gases. This also will depend on the composition of the planet and its impact by the comets and other objects in the outer space.
