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

Q: Physical and chemical properties of geometric isomers are generally what? Choices: - round - difficult - similar - different A:
different

Q: In which area does conduction mainly happen? Choices: - higher atmosphere - thermosphere - mesosphere - lower atmosphere A:
lower atmosphere