Hi, I'm currently in the plotting stage of a novel and hope to include an underground cave for two humans to discover together and keep secret. Caves have no light. Nothing grows without light. ..Except chemosynthetic bacteria. So let's say there is one part of the cave with a hole in the roof where light gets in. This is a cave with a river system. Bioluminescent bacteria spread throughout the water. There is a large room with an underground forest. Perhaps of mushrooms. So. How in the hell can I make stuff grow in there without making so many light holes that this cave is bound to be discovered by the rest of humanity? I'm willing to slip up on the practically idea of this a little bit, thought I do want it to be almost scientifically feasible to be believable.
*When I asked my biology teacher - who has a masters in chemistry - if an underground cave supported entirely by chemosynthetic bacteria was possible, he said it could be as long as there is a way for the gases to escape. Which makes sense..
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