Environment

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Across
  1. 1. release gas or radiation — EMIT
  2. 2. help cause something — CONTRIBUTE
  3. 4. to be replaced naturally — RENEWABLE
  4. 6. from heat inside the Earth — GEOTHERMAL
Down
  1. 1. use up all of something — RUN OUT O Gases that trap heat in the atmosphere — GREENHOUSE GASES
  2. 2. chimneys releasing industrial fumes — SMOKESTACKS
  3. 3. limits; not infinite — FINITE
  4. 5. that converts air movement into electricity — WIND TURBINE
  5. 7. average temperatures on Earth — GLOBAL WARMING