Lack of water would be the problem.
We're really lucky to have our plants here. Though it's thought that they might have near destroyed the planet's life at least once (1: by almost freezing it solid permanently when they wiped out our atmopheric methane (a heavy greenhouse gas) by producing free oxygen, and 2: just by introducing so much of the dealdly oxygen molecule in the atmosphere when other life wasn't adapted to it).
Hydrogen sulfide and Carbon Dioxide. Re-entrain the carbon. Free up the sulfur. Let nature take it's course.