Doonesbury by Garry Trudeau for June 27, 1978
Transcript:
Zonker: Man! I had no idea that photosynthesis was so complicated! Plant: Easy, now. Start to come out of your curl... Zonker: Like this? Plant: Too fast, too fast! You have to synchronize your movement with the sun's progress! Zonker: Oh, wow, that's hard. You really have to concentrate... Plant: So? I thought you were a competitor! Zonker: Well, I am, but... Plant: No, no! Now you're giving off too much Co2!