A total of about 4 million acres of U.S. land are used to grow our vegetables. About 56 million acres of land are used to grow hay for livestock.
In 2004, Americans consumed 208 pounds of fresh vegetables per person. Produce Marketing Association (pma.com)
Vegetables that are boiled actually lose some of their water content. They will weigh less after boiling in water than they did before. This is caused by the heat, which breaks down the cell walls and allows some of the water to leak from the plants cells.