ENVIRONMENT

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Across
  1. 2. damage caused to water, air, etc. by harmful substances or waste.
  2. 3. the air, water, and land in or on which people, animals, and plants live.
  3. 7. a large area of land covered with grass. It is a biome.
  4. 9. an area, often covered with sand or rocks, where there is very little rain and not many plants.
Down
  1. 1. a region of the earth's surface and the particular combination of climate, plants, and animals that are found in it.
  2. 4. an imaginary line drawn around the middle of the earth an equal distance from the North Pole and the South Pole.
  3. 5. (part of) the very large area of land in North Asia, North America, and northern Europe where, because it is cold, trees do not grow and ground below the surface is permanently frozen.
  4. 6. to keep someone or something safe from injury, damage, or loss
  5. 8. unwanted matter or material of any type, especially what is left after useful substances or parts have been removed.