The main greenhouse gases in the atmospheres of the terrestrial planets are

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Explanation:

Terrestrial Planets are the planets that have solid surface and are smaller in size. Mercury, Venus, Earth and Mars are the terrestrial planets of our solar system.

The main greenhouse gases in the atmospheres of the terrestrial planets are, Carbon dioxide (the atmosphere of Venus has mainly CO_2 in it making it hottest planet of the solar system because of greenhouse effect). Water vapor and Cloroflorocarbons in the Earth atmosphere. Traces of methane and nitrous oxide are also present.