Base your answers to questions 10 through 12 on the information below. In September, Alex observed a dry creek in a wildlife area in northwestern Nevada. In February of
the next year, water started to flow in the creek, and a small pond formed in the area. By the end
of May, the creek was dry again and the pond was gone.
10. Identify one possible natural source of the water that flowed in the creek.
11. Describe the property of water that most likely changed when the pond disappeared.
12. Explain how some of the water that had been in the pond could return to the source you identified.