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Earth ScienceNatural Hazards and Risk
Tornadoes, earthquakes, tsunamis, and volcanic activity are all examples of natural hazards with the potential...
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BiologyFuture of Human Evolution
Some noted modern scientists have declared that human evolution is over. With advances in medicine...
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Earth ScienceThe Hydrologic Cycle
Powered by the sun, water constantly cycles through the Earth and its atmosphere. This module...
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