How would the Earth's climate be different if there were NO GREENHOUSE GASSES at all?


TOO COLD for humans. We need some greenhouse gasses to stay warm.
TOO HOT for humans. Greenhouse gasses stop sunlight from hitting us.
BETTER than it is now for humans. Greenhouse gasses are bad in any amount.
The SAME as it is now, because greenhouse gasses DON'T AFFECT the atmosphere.
The SAME as it is now, because there AREN'T ANY greenhouse gasses in our atmosphere.