Which one of the following statements about carbohydrates is true?
a. carbohydrates are a friendly fuel.
b. carbohydrates are fattening.
c. a teaspoon of carbohydrate contains twice as many calories as the same amount of fat.
d. carbohydrates are stored, rather than burned, by the body.

Does masterbation affect height growth or loss of growth hormone?

Monitor and apply fix up stratorgies

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area