carbon dioxide sequestration
Trees and vegetation absorb CO2 from the atmosphere until they are burnt or decay when it is released back into the atmosphere.
However if this vegetable material is buried , probably within the oceans, the pressure converts the material into fossil fuels; oil and gas are the main ones.
Burning these fossil fuels releases the carbon dioxide that was captured by the trees and plants before they were fossilised.
There is opposition to burning fossil fuels for power because it is a waste of a valuable resource. But there is also opposition to burning fossil fuels because it releases the captured CO2 back into the atmosphere!
But the economies of the world need energy and fossil fuel power stations with carbon capture are a short-term, viable solution.