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

Answer: In some national parks, controlled fires are maintained by firefighters. Which of these is one of the major reasons for using controlled burns to maintain certain ecosystems?

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

Answer: Rolanda is growing tomato plants in her garden. She has created a compost pile and has been adding compost around her tomato plants to help fertilize them. Compost is solid waste in which organic material is broken down by microorganisms in the presence of oxygen to where it can be safely stored, handled, and applied to the environment. On what does Rolanda primarily rely in order for composting to work?

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

Answer:
When a plant dies, it often decomposes and becomes part of the soil. This process is one step in which cycle?