question: Write a question you would see in a school textbook. OPTIONS:
- eating foods high in protein at a young age
- having a brother or sister with blue eyes
- being overexposed to the Sun at a young age
- receiving a gene for blue eyes from each parent
answer: What causes a person to have blue eyes?

question: Write a question you would see in a school textbook. OPTIONS:
- white blood cells
- brain
- red blood cells
- nerves
answer: What carries oxygen throughout the body?

question: Write a question you would see in a school textbook. OPTIONS:
- to provide energy for cell activities
- to produce sugar for storage in cells
- to release oxygen for breathing
- to supply carbon dioxide for photosynthesis
answer:
Which of the following best describes the purpose of cellular respiration?