Part B

Response to Moisture

5. CAUTION Sharp or pointed objects can ^ cause injury. Handle scissors carefully. Cut a piece of filter paper in half. Moisten one of the halves with water and place it in the bottom of a Petri dish. Make sure that drops of water do not leak onto the bottom of the dish.

6. Place the dry half of the filter paper in the bottom of the Petri dish, leaving a 2 mm gap between it and the damp filter paper.

7. Place five pill bugs along the boundary between the wet and dry areas. Place the top on the dish.

8. To which side do you predict the pill bugs will move? Write your prediction in your data table. Observe the pill bugs for 3 to 5 minutes, and record your observations in your data table. Do your observations agree with your predictions?

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