7 groundwater pollution is easy to monitor and clean

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7. Groundwater pollution is easy to monitor and clean up. 8. Groundwater pollution as a result of human activity is widespread . 9. Pollutants leach through soil and seep into storage tanks . 10. It can take decades for groundwater to get rid of its contaminants. 11. Most efforts to reduce groundwater pollution focus on prevention . Ocean Water Pollution 12. Why is it important to minimize the amount of oil released into the ocean? 13. What is the largest source of oil in the oceans? 14. Why is mercury contamination in the ocean a concern? 15. What causes red tides? For Questions 16–19, write True if the statement is true. If the statement is false, replace the underlined word or words to make the statement true. Write your changes on the line. 16. Most oil pollution in the oceans comes from small, nonpoint sources .
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17. Marine organisms at higher trophic levels contain higher levels of mercury. 18. Of the nutrients phosphorus and nitrogen, phosphorous causes the most damage to oceans. 19. Reducing oil seepage into coastal waters can lessen the frequency of algal blooms. Controlling Water Pollution Complete each statement by writing the correct word or words. 20. The Clean Water Act made it illegal to release from a point source without a permit. 21. Drinking water suppliers water with chemicals and run it through filters before sending it to your tap. 22. includes water from showers, toilets, dishwashers, as well as water used by industry to cool power plants.
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