MODULE-3-Q1.pdf

 : Describe briefly the history of Earth’s ancient oceans. Illustrate the hydrologic cycle. Describe the various types of aquatic ecosystems and the factors that determine their characteristics. List various kinds of water use and their asso...

 : Describe briefly the history of Earth’s ancient oceans. Illustrate the hydrologic cycle. Describe the various types of aquatic ecosystems and the factors that determine their characteristics. List various kinds of water use and their associated problems. Describe the major sources of water pollution. List various solutions that help reduce negative human impact on freshwater and marine environments.  Condensation Precipitation Evaporation Collection  Freshwater Ecosystem Aquatic Life Zones Marine Ecosystem  Coastal Zone – warm and nutrient-rich waters that extends near the shallow edge of the continental shelf.     MAJOR WATER POLLUTANTS AND THEIR SOURCES Effects on Humans and Polluting Agent Sources Type of Pollution the Environment Infectious agents (bacteria, Human and animal waste Municipal Cause waterborne diseases viruses, and parasites) Oxygen-demanding wastes Sewage, animal feedlots, food (biodegradable animal waste processing factories, pulp Agricultural Deplete oxygen and debris) mills Oil, gasoline, cleaning Organic chemicals Industrial Add toxins to aquatic system solvents, pesticides, plastics Inorganic chemicals Acids, salts, metal compounds Industrial Add toxins to aquatic system Cause excessive growth of Plants nutrients Nitrates and phosphate ions Agricultural algae Disrupt photosynthesis, food Sediments Soil, silt Agricultural webs and other processes and systems Make species vulnerable to Heat Discharge heated water Thermal diseases Thank you!