A student made a model of a closed ecosystem in a bottle like the one shown. Then the student hypothesized that the water cycle will take place in
the model ecosystem.
Which evidence can the student collect to support her hypothesis?
A She can visually count the number of rocks in the bottle.
B. She can observe condensation on the inside of the bottle.

C. She can observe precipitation in her neighborhood every day.
O D. She can add a new plant to the plastic bottle every day.