nature

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Across
  1. 5. the presence of harmful substances in the air, water, and land
  2. 6. improper disposal of non-biodegradable materials causes ____ pollution
Down
  1. 1. leaving faucets running and misusing clean water results in
  2. 2. long-term changes in temperature and weather patterns are known as
  3. 3. the cutting down of trees without proper replacement
  4. 4. the wearing away of soil due to wind, water, of human activity is called