13. Open-End Screen Clay Sand a. Type of soil b. Type of beaker c. Amount of water d. Number of bottles -Open-End Screen (2009-5) Students want to learn which of two soils holds more water. They put clay in one bottle and sand in the other. Then they put equal amounts of water in the bottles. Some of the water drained into beakers. Which of these is the manipulated, independent variable?

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