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Exhibit 3 Earth Science: Effects of Human Activities to the Water Resources

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This Slide talks about the effects of human activities on quality and availability of water on the earth's surface.

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Exhibit 3 Earth Science: Effects of Human Activities to the Water Resources

  1. 1. EFFECTS OF ACTIVITIES ON QUALITY AND AVAILABILITY OF WATER
  2. 2. “WATER QUALITY COMPRISES THE PHYSICAL, CHEMICAL, AND BIOLOGICAL CHARACTERISTICS OF A WATER BODY… HUMAN ACTIVITIES AFFECT BOTH WATER QUALITY AND QUANTITY.” (PETERS, N., MEYBECK, M., CHAPMAN, D., 2006)
  3. 3. COMMERCIAL FORESTRY PLANTING FORESTS NEAR WETLANDS AND STREAMS CAN RESULT IN THE WATER FLOW BEING RESTRICTED AND EVENTUALLY DRYING UP.
  4. 4. WETLAND DESTRUCTION THEY ARE RESPONSIBLE OF STORING LARGE AMOUNTS OF RAINWATER THAT FEED THE GROUNDWATER AND STREAMS DURING DRY TIMES. IF DESTROYED, THERE WILL BE FEWER WETLANDS THAT ACT AS SPONGES OR NATURAL FILTERS OF RIVER SYSTEMS.
  5. 5. POLLUTION IMPROPER DISPOSAL OF WASTE CAN POLLUTE BODIES OF WATER. THE DISCHARGE OF WASTE OF SOME INDUSTRIES INTO NEARBY STREAMS IS ALSO A CONTRIBUTOR TO POLLUTION.
  6. 6. POLLUTION CLEANING WATER SOURCES ONCE POLLUTED IS MORE COSTLY AND IT TAKES A LONGER TIME TO DO SO.
  7. 7. AGRICULTURE THE CHEMICALS FARMERS SPRAY ON THEIR CROPS CAN SEEP INTO THE GROUND AND COULD LATER ON FLOW ON STREAMS OR RIVERS.
  8. 8. EXCESS WATER WITHDRAWAL AROUND THE WORLD, LAKES, RIVERS AND INLAND SEAS ARE IN THE PROCESS OF DRYING UP BECAUSE TOO MUCH WATER IS BEING DRAWN FROM THEM.
  9. 9. SEDIMENTATION ACTIVITIES SUCH AS FARMING, CLEARING FORESTS, BUILDING ROADS, AND MINING INCREASE THE AMOUNT OF SEDIMENTS IN THE WATER. THESE SEDIMENTS COULD CARRY TOXIC CHEMICALS.
  10. 10. SEDIMENTATION THEY COULD DAMAGE EQUIPMENT USED IN WATER SUPPLY INSTALLATIONS AND IN HYDROELECTRIC POWER PLANTS. SEDIMENTATION CAN ALSO LIMIT RESERVOIRS’ CAPACITY.
  11. 11. URBAN GROWTH CAUSES SCARCITY OF WATER DUE TO INCREASING POPULATION
  12. 12. INFORMAL SETTLEMENTS PEOPLE WHO LIVE IN AREAS AROUND WATER SOURCES USUALLY BATHE, WASH CLOTHES, OR EVEN DEFECATE, AT THE SAID WATER SOURCE, THUS, CONTAMINATING IT. THIS INCREASES THE CHANCE OF PEOPLE CATCHING WATER-BORNE DISEASES.
  13. 13. CLIMATE CHANGE OBSERVED THAT LAND AND MOUNTAIN GLACIERS ARE SHRINKING, AND THIS TREND HAS ACCELERATED CONSIDERABLY IN RECENT YEARS.

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