Earth Day Crossword Puzzle

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Across
  1. 2. This word starts with an "E." We get most of this directly from the Sun, but we also generate it using coal, nuclear generators, hydro-electric plants, and the wind. What is it?
  2. 5. This word starts with an "H." It is the type of place where a plant or animal lives. What is it?
  3. 8. This word starts with an "E." It is the word that describes our surroundings - the air we breathe, the water, plants, animals and the Earth itself. What is it?
  4. 9. This word starts with an "R." When we re-use items, we can help the environment. Used paper can be made into new paper, metals and glass can be re-used also. What is the term for this?
Down
  1. 1. This word starts with a "W." It is a very important substance for all living things. When it becomes polluted, many living things suffer. What is it?
  2. 3. This phrase starts with an "E." Many plant and animal groups are close to becoming extinct. What is the word that describes them?
  3. 4. This phrase starts with a "W." It is the name of a process that recirculates an important substance from the Earth to the sky and back again. What is it?
  4. 6. This word starts with an "A." It is a type of polluted precipitation (moisture falling from the sky) that causes erosion and corrosion. What is it?
  5. 7. This word starts with an "A." It is another name for the air that surrounds the Earth. What is it?