Non point source pollution -comes from many sources -human activities- storm water runoff, runoff from agriculture and industry. storm water runoff, runoff from agriculture and industry. -results in changes- in nutrient levels in water, causes problems with populations of organisms. in nutrient levels in water, causes problems with populations of organisms. -Most of the oil that pollutes the oceans are from nonpoint source pollution

Point source pollution Trash dumping- Trash dumping- Many countries still dump trash into the open ocean. Needles and vials of blood containing the AIDS virus have washed up onto beaches. Many countries still dump trash into the open ocean. Needles and vials of blood containing the AIDS virus have washed up onto beaches. Effects of trash dumping- Effects of trash dumping- Ocean dwelling animals might mistake trash for food ( and choke to death) or become entangled in trash resulting in death. Ocean dwelling animals might mistake trash for food ( and choke to death) or become entangled in trash resulting in death.

Point source pollution ( continued) Sludge dumping- Sludge dumping- Sludge is the solid waste in raw sewage Sludge is the solid waste in raw sewage –Pollutes beaches- is washed up by currents. –Kills marine life. Oil spills- Oil spills- Usually occur during shipping. Usually occur during shipping. –Can harm plant and animal life including people. – Spills are only 5% of all oil pollution in the ocean. Preventing oil spills- Preventing oil spills- Double hull tankers give two layers of protection. Double hull tankers give two layers of protection.

Saving our resources Nations take notice- Nations take notice- Treaty of 1989 signed by 64 countries Treaty of 1989 signed by 64 countries -prohibits dumping of plastics, metals, oil, and radioactive waste. -prohibits dumping of plastics, metals, oil, and radioactive waste. Citizens take charge- Citizens take charge- –Government spends 130 million a year to clean beaches. –Adopt-a- beach program (picking up trash can make the beach safer for plants, animals, and people)

Saving our resources (continued) Action in the U.S. Action in the U.S. –Clean Water Act-1972 – U.S. Marine Protection Act- prohibits dumping of anything that would negatively affect humans, marine environments, ecosystems, or businesses.