Part C

Setting Up Ecosystem 3

10. Place a small, clear glass container, such as a mayonnaise jar, inside the larger jar and against one side.

11. Carefully place soil in the larger jar about 4 or 5 in. deep, filling around the smaller jar so that you can see through both jars on one side. Do not place any soil on the side where the two jars touch. Clean any soil from the sides of the jar that may obstruct your view.

12. Place some rocks on the soil, and moisten the soil carefully.

13. Place 1 in. of gravel inside the smaller jar, and gently fill with pond water or dechlorinated tap water to the level of the soil.

14. Place the algae and the aquatic plants in the water. Plant the grass seeds and clover seeds in the soil in separate areas of the jar.

15. /&\ Clean up your materials, and wash your hands before leaving the lab.

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