Q: How do you determine the atomic weight of an element? Choices: - multiply protons and neutrons - subtract protons from electrons - divide protons and neutrons - add up protons and neutrons A:
add up protons and neutrons

Q: Vitamins are organic compounds that are essential in very small amounts for the maintenance of normal what? Choices: - respiration - pigments - calcium - metabolism A:
metabolism

Q: Q: What is the name given to the use of controlled nuclear fusion as an energy source? Choices: - generator power - half-life - fossil fuel - thermonuclear power A:
A: thermonuclear power

Question: Q: About how many days does it take the moon to make one orbit around the earth? Choices: - 21 - 30 - 22 - 28 A:
Answer: 28

*Question*
Q: Melanocytes are located in which layer of the epidermis? Choices: - follicle - outer - crust - bottom A:
**Answer**
bottom

Q: Q: Which fuels provide most of the world's energy? Choices: - coal fuels - pattern fuels - artificial fuels - fossil fuels A:
A: fossil fuels