Across
- 2. Once substances pollute groundwater, that water becomes ____________ to drink.
- 4. Farms and ranches use up to 70 percent of Earth’s ____________ and also create significant water pollution.
- 6. It is estimated that drips from vehicles contribute up to a ____________ tons of oil to marine environments each year.
- 8. Nearly ____________ of Canada's rivers and streams and more than one-third of our lakes are polluted and unfit for swimming, fishing and drinking.
- 10. Toxic substances mix with / dissolve into water ____________.
- 12. ____________ of out every six premature deaths in the world can be attributed to disease from toxic water exposure.
- 14. ____________ waste can persist in the environment for thousands of years, and its removal is a major challenge.
- 17. ____________ found in water pollution can spread disease.
- 20. Wastewater and stormwater carry chemicals, liquid and solid wastes, oils and debris into the ____________ system.
- 21. About 89 percent of the drinking water used by Canadians comes from ____________ water sources.
- 23. Used water from our sinks, showers, and toilets, as well as that from industrial processes, are collectively known as ____________.
- 24. what percentage of the world’s wastewater is often dumped untreated into rivers, lakes, and oceans?
- 25. Most ocean pollution originates on ____________.
- 26. Water pollution ____________ human survival
- 27. Oceans absorb about a quarter of the ____________ pollution created by the burning of fossil fuels each year, resulting in oceans that are more acidic.
- 28. water becomes ____________ when harmful substances enter it
Down
- 1. ____________ is the sole source of water for many people around the world.
- 3. Nets and other ____________ gear discarded at sea are responsible for a significant amount of ocean garbage - up to 50 percent.
- 5. ____________ water causes shells and coral to dissolve, makes it harder for new shells and coral to form, and may even impact the nervous systems of sharks, clownfish and other marine life.
- 7. Some algae blooms are directly harmful to wildlife because they produce ____________ - chemicals that destroy nerve tissues.
- 8. Toxins and ____________ ____________ found in polluted water systems can reduce organisms’ life spans and/or ability to reproduce.
- 9. Oil can be naturally released from fractures in the ocean ____________.
- 11. Unsafe water kills ____________ people each year than war and all other forms of violence combined.
- 13. ____________ pollution is made up of petroleum products.
- 15. ____________ is water from precipitation.
- 16. pesticides and herbicides introduce ____________ that can negatively affect a variety of living organisms.
- 18. Water is ____________ for all life.
- 19. marine ____________, made up of plastics and other materials that don’t easily biodegrade, can strangle, suffocate and starve aquatic animals.
- 22. When water pollution causes an overgrowth of algae, which then dies over time, ____________ (lack of oxygen in the water) can happen.