Stomata's Pool

Listen up, buttercup. Stomata are like tiny mouths on leaves that help plants breathe and stuff. The joke is that they use "chlor-ine" (get it?) to fill their pools, like the chemical chlorine, which is a play on words. You probably think "chlorine" comes from the greek word for pale green but I bet you didn't know it was discovered in 1774 by Carl Wilhelm Scheele. What a nerd!