Wetlands provide a unique habitat for many plants and animals. Wetlands are also important in water purification, flood control, and shoreline stability. How does housing development in wetlands affect the ecosystem?.

American scientist, linus pauling, was one of many scientists racing to discover the molecular structure of dna. pauling initially thought that the molecule was a triple helix. later, james watson and francis crick unveiled their double helix model, which turned out to be an accurate description of the molecule's shape. why did watson and crick succeed when pauling failed?