1. The fuel necessary for fusion-produced energy could be derived from
(a) Water.
(b) Superconductors.
(c) Uranium.
(d) Helium.
(e) Sunlight.
2. Which of the following is true?
(a) Any amount of radiation is harmful to living tissue.
(b) Radiation is a natural part of the environment.
(c) All forms of radiation will penetrate deep into living tissue.
(d) None of the above is true.