The Differece between atmospheric, hydrologic, geologic, and manmade hazards

Write a short 1-2 page summary explaining the difference between atmospheric, hydrologic, geologic, and manmade hazards and provide examples of each (explain what they are, discuss how they differ, and provide examples of each). The 1-2 page expectation is for the substantive portion of the work only, and does not include the separate cover page and reference page, both of which are required.