الفهرس 
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Abstract
Marine environments are home to a vast diversity of organisms ranging from prokaryotes to higher vertebrates. They are also of enormous direct importance to human, providing essentials such as water and food as well as transportation, economic opportunities, recreation, and so on. Unfortunately, these environments also act as sinks for a great variety of anthropogenic pollutants, many of which are toxic. Sources include burning of fossil fuels, industrial waste water, sewage treatment plants, agriculture and non point source runoff, etc. It is important to understand the impact and effects of these chemicals on aquatic life forms (Almroth, 2008).