Ask your sisters to please explain to you how just 0.0037% of our atmosphere can possibly capture enough heat, then back radiate that heat in large enough quantities to cause global climate change
Their eyes will cross
Man only produces enough CO2 to take up just 0.0037% of our atmosphere- that means that 99.9863% of the atmosphere is FREE FROM CO2 produced by man
What’s even funnier is the FACT that over the whole course of man’s complete history, man has only produced 0.00022% of the CO2 that natures and the earth’s mantle has created
Your sisters very likely believe that the atmosphere is “saturated with CO2 produced by man” (infact, ask them how much of the atmosphere has CO2 in it caused by man- get them to show how little they actually know about the issue)
After they answer, tell them the truth- the answer is 0.0037%
IF you want to explain the math to them, tell them the atmosphere has a TOTAL of 0.04% CO2 in it (BOTH Natural and man produced), Man is responsible for just 3.4% of ALL the CO2 In the atmosphere, so this means 3.4% of 0.04% = 0.0037% of the atmosphere consists of man produced CO2
(Note, I may be figuring this wrong- math was never my strong point- If someone wants to figure out the math to the letter, the atmosphere weighs 6 quadrillion tons, and man produces approx. 7 billion tons [sounds like a huge amount, but it is insignificant compared to the total volume of the atmosphere]- so figure out what % 7 billion tons is of 6 quadrillion tons)
It’s like the ozone hole/Freon thing. Take dyed freon. Release it in a container/room. It goes to the ground. Outside it is absorbed into the soil.
What it does not do is defy gravity or catch miraculous air currents that take it on it’s evil mission to 70,000 feet to destroy ozone.
You can’t tell them that without the Thorazine look appearing either.