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Garden in a bottle, anyone?

This miniaturę ecosystem has been thriving in an almost completely isolated State for morę than forty years. It has been watered just once in that time. The original single spiderwort plant has grown and multiplied, putting out seedlings. As it has access to light, it continues to photosynthesize. The water builds up on the inside of the bottle and then rains back down on the plants in a miniaturę version of the water cycle. As leaves die, they fali off and rot at the bottom, producing the carbon dioxide and nutrients reguired for morę plant matter to grow.

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