Q: What are used to balance chemical equations? Choices: - velocities - densities - fractions - coefficients A:
coefficients

Q: Aside from light, incandescent light bulbs also give off what that wastes energy? Choices: - temperature - humidity - electricity - heat A:
heat

Q: Work is done only if a force is exerted in the direction of what? Choices: - wind - north - gravity - motion A:
motion

Q: What are terrestrial biomes determined by? Choices: - moisture and elevation - pressure and temperature - time and temperature - temperature and moisture A:
temperature and moisture