>But plants are eaten by various organisms (= C becomes part of the organism), are used for building houses, become fossilized. All of these make these "cycle"

>But plants are eaten by various organisms (= C becomes part of the organism), are used for building houses, become fossilized. All of these make these "cycle" claims invalid. That organism will soon die and decompose as well. Fossilization is rather uncommon nowadays. The only one of those where we could and do put a lot of carbon is buildings. However, even those end up rotting over time. Most of the coal formed at a time where lignin didn't break down. We don't live in such a time. We can't repeat the same process. It doesn't really matter whether the carbon is released back into the atmosphere in 2, 5, 50, 100 years. It'll still be released and contribute. Stashing carbon into those forms is not a solution.