which substance is a greenhouse gas that is emitted by human activities, is the most widespread, and remains…

which substance is a greenhouse gas that is emitted by human activities, is the most widespread, and remains in the air the longest?\nwater vapor\nmethane\nfluorinated gas\ncarbon dioxide

which substance is a greenhouse gas that is emitted by human activities, is the most widespread, and remains in the air the longest?\nwater vapor\nmethane\nfluorinated gas\ncarbon dioxide

Answer

Brief Explanations:

Water vapor is a natural greenhouse - gas and its atmospheric presence is highly variable. Methane has a shorter lifespan in the atmosphere compared to carbon dioxide. Fluorinated gases are potent but not as widespread as carbon dioxide. Carbon dioxide is emitted by numerous human activities like burning of fossil fuels, deforestation etc., is the most widespread greenhouse gas and can remain in the atmosphere for centuries.

Answer:

D. carbon dioxide