Which of the following is not true of color blindness?
1. a color blind person cannot see any colors.
2. color blind people learn to rely on shapes, patterns, and positions of signs and signals.
3. for some people, it might be difficult to recognize colors of traffic lights and signs.
4. red-green color blindness is the most common type of color blindness.

1. This is not true because a color blind person can see colors, they just see different colors than normal people see them
hope this helps

A color blind person cannot see any colors. is false because it is only certain colors that aren't seen

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -