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

Answer: Felicia investigated whether water color affected how fast the water heated in sunlight. She poured tap water into five beakers and placed food coloring in four out of the five beakers. Felicia then used a thermometer to measure the temperature of the water in each of the beakers. Which of these was used as control in her investigation?

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

Answer: Which atmospheric phenomena are created by the interaction of charged particles with Earth's magnetosphere?

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

Answer:
Soil erosion can be best prevented by