question: Write a question you would see in a school textbook. OPTIONS:
- mass of Earth.
- magnetic field of Earth.
- rotation of Earth on its axis.
- weight of Earth's atmosphere.
answer: The pull of gravity on Earth is a direct result of the

question: Write a question you would see in a school textbook. OPTIONS:
- incomplete metamorphosis
- complete metamorphosis
- alternation of generations
- spontaneous mutation
answer: Which term best describes the life cycle of an insect that reaches the adult stage without being a pupa?

question: Write a question you would see in a school textbook. OPTIONS:
- It guarantees the survival of a species.
- It increases the size of a population.
- It requires the individuals to be identical.
- It happens over a long period of time.
answer:
Which statement best describes the theory of natural selection?