Which statement about caves and polluted groundwater is true? a. cave rock neutralizes the pollutants in the groundwater. b. wells that tap water in the caves yield the cleanest water. c. polluted groundwater travels more quickly and easily through caves. d. caves store the pollutants, thereby keeping them out of human water supplies.

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !