nergy from food to maintain life.
The amount of calories the body needs depends on the work the body is doing. For example, a man who weighs 150 pounds needs only 1,680 calories per day if he is in a state of absolute rest. If he does moderate work such as desk work, he needs 3,360 calories per day. And if he does a heavy work, he may need as much as 6,720 calories a day to keep the body functioning properly.
Children need more calories than adults, since older people cant burn the fuel as quickly. Interestingly enough, we use up more calories in winter than in summer. Suppose, however, we take in more fuel than we need? The body uses up what it needs and store some of it away for future use. The body can store away about one-third of the amount it needs each day. The rest becomes fat! And thats why we "watch our calories".
Key:
We cant explain how a cell transforms food into energy. A "gram calorie" is the amount of heat required to raise the temperature of one gram of water one degree centigrade. The "large calorie" is 1,000 times as great. Each type of food furnishes a certain number of calories. The more you work , the more calories you need. Children need more calories than adults, and in winter we need more calories than in summer. If we take in more fuel (calories) than our body needs we get fat.
Task6
Read the text please and continue each sentence by choosing the right variant.
Vegetarian.
1) A vegetarian is someone who avoids eating. . .
2) Most vegetarians will also not use cosmetics or toiletries that may contain. . .
3) The word "vegetarian" comes not from "vegetable" but from the Latin word vegetus. . .
4) Some people think it is wrong. . .
5)
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