Across
- 3. capable of floating; that can be floated.
- 9. The greatest contributors to toxic pollution are herbicides, pesticides and industrial compounds.
- 12. excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
- 13. the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere.
- 15. Recoverable materials that are organic in nature, such as plant material, food scraps, and paper products, can be recovered through composting and digestion processes to decompose the organic matter.(TWO WORDS)
- 16. metals that are harmful to people's health. In very small amounts, these metals may be necessary to support life.(TWO WORDS)
- 17. not directly emitted as such, but forms when other pollutants (primary pollutants) react in the atmosphere.(TWO WORDS)
- 20. a site for the disposal of waste materials by burial and the oldest form of waste treatment.
- 21. oxides compounds of sulfur and oxygen molecules and It is a colorless gas that can be detected by taste and smell in the range of 1,000 to 3,000 micrograms per cubic meter (µg/m3).(TWO WORDS)
- 22. a chemical compound with the chemical formula CH4 It is a group 14 hydride and the simplest alkane, and is the main constituent of natural gas.
- 23. are often termed ‘diffuse’ pollution and refer to those inputs and impacts which occur over a wide area and are not easily attributed to a single source. (TWO WORDS)
- 24. he destruction of something, especially waste material, by burning.
- 26. include: Acidity caused by industrial discharges (especially sulfur dioxide from power plants) ... Chemical waste as industrial by-products. Fertilizers containing nutrients--nitrates and phosphates—which are found in storm water runoff from agriculture, as well as commercial and residential use.
- 28. a range of health damaging pollutants such as fine particles and carbon monoxide. In poorly ventilated dwellings, smoke in and around the home can exceed acceptable levels for fine particles 100-fold.
- 29. from waste is the conversion of non-recyclable waste materials into usable heat, electricity, or fuel through a variety of processes, including combustion, gasification, pyrolization, anaerobic digestion and landfill gas recovery. (TWO WORDS)
Down
- 1. a type of radiation that is produced by the sun and some artificial sources, such as solariums.(TWO WORDS)
- 2. a single, identifiable source of pollution, such as a pipe or a drain. Industrial wastes are commonly discharged to rivers and the sea in this way. (TWO WORDS)
- 4. recognized as a source of discomfort for centuries as smoke, dust and obnoxious odors.
- 5. to say that you will not do or accept something: .
- 6. also known as particle pollution, is a complex mixture of extremely small particles and liquid droplets that get into the air.
- 7. can be defined as the release of a substances or high-energy particles into the air, water, or earth as a result of human activity, either by accident or by design.(TWO WORDS)
- 8. an air pollutant emitted directly from a source.(TWO WORDS)
- 10. a substance that pollutes something, especially water or the atmosphere.
- 11. Caused or influenced by humans.(TWO WORDS)
- 14. the process of converting waste materials into new materials and objects.
- 18. a colorless, odorless, and tasteless gas that is slightly less dense than air.(TWO WORDS)
- 19. a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation.
- 23. are a group of gases that are composed of nitrogen and oxygen. (TWO WORDS)
- 25. are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
- 27. make smaller or less in amount, degree, or size.