Carbon dioxide was used by early plants so that they could grow / photosynthesise.

More plants developed and used more carbon dioxide.
What one is it grow or photosynthesis?

What is avogadro’s number, and why is it useful

When a septic tank backs up a goes in to clean it out

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.