Problem: Write a question you would see in a school textbook.

Answer: In addition to oxygen, which gases make up the largest percentage of Earth's atmosphere?

Problem: Write a question you would see in a school textbook.

Answer: Manganese has an atomic number of 25 and an atomic mass of 55 amu. How many particles are found in its nucleus?

Problem: Write a question you would see in a school textbook.

Answer:
Which of the following is a correct food chain?