How much water is on your plate? About 70 percent of the world's "blue water withdrawals" irrigate agriculture. World Water Day is March 22, and this year's theme examines food production. To see how many gallons of water bring common foods from field to plate, take our H2-Whoa! quiz.
Q: How much water goes into one piece of steak?
A) About 850 gallons.
B) About 1,850 gallons.
C) Cow aren't plants, they don't need to be watered.