the carbon atom has an atomic number of 6 and an atomic weight of 12. therefore, a carbon atom has how many protons

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

The cluster of developing cells from conception until birth is called an