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

Answer: A spring-fed stream forms a pond that contains watercress plants, minnows, and crayfish. The pond receives 5 hours of direct sunlight every day. Which of the following is an abiotic factor in this ecosystem?

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

Answer: Materials such as carbon and nitrogen go through cycles. The cycling of nitrogen waste materials is mostly dependent upon the role of which factor?

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

Answer:
Which mineral has six-sided transparent crystals that will scratch glass?