Climate Change

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Across
  1. 3. a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere.
  2. 5. a long term change in the earth's overall temperature with massive and permanent ramifications
  3. 6. the gaseous envelope surrounding the earth
  4. 8. materials or substances occurring in nature which can be exploited for economic gain.
Down
  1. 1. a gas that contributes to the greenhouse-gases effect by absorbing infrared radiation
  2. 2. a natural event such as a flood, earthquake, or hurricane that causes great damage or loss of life.
  3. 4. a mesure of the warmth or coldness of an object or substance with reference to some standard value
  4. 7. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.