"Building an Ecosystem in a Bottle"
- Initial Questions: Will our flowers really grow? Would we be able to eat the green beans?
- Materials used:
- Bean seed (1 green bean seed), Zinnias (3 seeds)
- Organic soil: 4 cups moistened
- Daphnia (approximately 6)
- Elodea (1)
- Spring water (626 mL)
- 2 two-liter bottle
- Clear Packing Tape
- Gravel (1 dixie cup)
- Cotton string (3 strings-1 ft)
- Snail (3:big, 1:small)
- Goal: Building a sustainable ecosystem in a bottle
- Procedure:
- Cut the already washed bottles (cuts shown in observation #1)
- Add 1 Dixie cup of gravel to the bottom
- Add 626 mL of spring water
- Measure one elodea plant (18 cm)
- Place snails in water (3 big/1 small)
- Use hammer and nail to puncture holes in the cap
- Put the string (3 strings-1 ft each) through the hole-leave half for the water and half for the top of the terrarium
- Make sure the lid of the terrestrial section does not touch water in the aquatic section
- Fill the inverted bottle with potting soil (4 cups moistened)
- Plant 1 green bean seed, 3 zinnias seeds
- Attach the bottom of the second bottom and then seal them together using tape
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