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Did you know the water facts of life?

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Can it?

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Competition in the animal world.

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In the span of history, a lot of people, religions and scientists have predicted the Apocalypse, the end of the world. There are thousands of different theories, but most of them are very, very unlikely to ever occur. But, a few of those theories do actually make some sense. Here are the three most realistic theories.

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When scientists and marine biologists mention symbiosis, one can only begin to fathom the relationship between two different living creatures that live close together and depend on each other in a particular way, each getting particular benefits from the other in order to survive. How far you can fathom this feat depends upon what you see and sometimes even what you experience. If you have seen a giant clam in the wild (seabed), you will know how beautiful it is.

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How to survive a tornado if you get caught in one.