What cartoon ? incomplete question
The stock market crashed which led to bank failures, works laid off, and a drought that lasted throughout the 1930s
Yes, you are correct about change of water into water vapours , also you will think it is doesn't have any importance and is waste for the plant energy. But it is a “NECESSARY EVIL” as it cools down the plant , transport water,minerals and also Plant hormones,etc. May you got your answer
