There are approximately 7 x 1027 atoms in the average human body. This is the estimate for a 70 kg adult human male. Generally, a smaller person would contain fewer atoms; a larger person would contain more atoms. On average, 87% of the atoms in the body are hydrogen or oxygen. Carbon, hydrogen, nitrogen, and oxygen together account for 99% of the atoms in a person. There are 41 chemical elements found in most people. The exact number of atoms of the trace elements varies widely according to age, diet, and environmental factors.
Symbols on California's Flag The once common California grizzly bear (also the official state animal) portrays strength; the star represents sovereignty; the red color signifies courage; and the white background stands for purity.
The current official U.S. flag is a 50 star flag, born of the need for a more practical design to accommodate new states entering the union. On April 4, 1818, Congress established the number of stripes at seven red and six white, and provided the addition of one star for each new state. The thirteen stripes represent the original 13 colonies. The 50 star flag has been in use since July 4, 1960 when Hawaii officially joined the union. In the first years of the Revolutionary War, America fought under many flags.