sentence: Grains contain carbohydrates that people can eat.
sentences_after: In poorer countries, grains are a large part of the food supply. In richer countries, they are still important as food, but not as important as in poorer countries. Growing grain uses a lot of water. About 1,000 tons of water is needed to grow one ton of grain.
concept_name: grain
headings: Grain
categories: Basic English 850 words