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