What is a greenhouse gas?(1 point)

Question

Responses

a gas at higher temperature than the surrounding atmosphere
a gas at higher temperature than the surrounding atmosphere

any gas in the troposphere that absorbs and re-emits infrared radiation
any gas in the troposphere that absorbs and re-emits infrared radiation

a gas that forms a physical barrier to block escaping heat
a gas that forms a physical barrier to block escaping heat

any gas in Earth's atmosphere

Answer 1

that traps heat and contributes to the greenhouse effect