A greenhouse gas is a gas that traps heat in the atmosphere. Cut greenhouse gas emissions.
It lets sunlight in and stops the heat radiating back out, which is why the name stuck. Without any greenhouse gas at all the earth would be frozen solid.
1noungreenhouse gasA gas that traps heat in the atmosphere.
“Methane is a greenhouse gas many times stronger than carbon dioxide.”
greenhouse gas is a gas.
Practised in Science & Space, Farm & Countryside