The different blood types are due to different structures attached to the red blood cells. The monosaccharide present in these different structures is:

Which of the following are true about boiling? 1. Boiling a liquid requires more energy than does evaporating it. 2. A liquid's boiling point varies with the atmospheric pressure. 3. The greater the ambient pressure, the lower is the boiling point

a. 2 and 3 only b. 1 and 3 only c. 1 and 2 only d. 1, 2, and 3

What percentage of the U.S. population on public water systems has fluoridated water?

a. 25% b. 45% c. 56% d. 65%