Question: Q: What occurs when the immune system is not working properly? Choices: - allergy - cancer - anemia - immunodeficiency A:
Answer: immunodeficiency

Question: Q: Gas particles are constantly colliding with each other and the walls of a container, and these collisions are elastic, so there is no net loss of what? Choices: - velocity - heat - temperature - energy A:
Answer: energy

Question: Q: What kind of power does not produce any pollutants, but produces waste that can be difficult to dispose of? Choices: - electrical - biofuel - solar - nuclear A:
Answer:
nuclear