How long do greenhouse gases last in our atmosphere

Between 65% and 80% of CO2 released into the air dissolves into the ocean over a period of 20–200 years.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but