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well the otters could hide in the kelp, but if the hunters killed the kelp the otters would have died because they couldn't hide.
I believe it is (C), (Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.) Hope this helps(:
The story of spontaneous generation illustrates that science is capable of doing exactly what it is supposed to do: observe nature and eliminate theories that contradict observations. In this case, the theory that (for instance) flies form spontaneously out of decaying meat was successfully falsified.
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is there an image so we can see which part you are talking about?