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A simple biome project consists of two 2-liter soda bottle, soil, cat grass, water, and an insect.

First, cut the soda bottles in the middle

Second, fill one of the cut soda bottles 3/4 of the way with soil.

Third, put the cat grass in with the insect.

Fourth, cover with the soda bottle and tape them shut.

If you didn't want to make a closed biome, then just poke a few holes in the bottles. They have to be small enough so that the insect doesn't disappear.

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12y ago

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