the environment

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Across
  1. 2. The problem of the slow steady rise in temperature of the earth’s atmosphere, caused by an increase of gases such as carbon dioxide in the air surrounding the earth, which trap the heat of the sun
  2. 4. Destruction of forests to make land for agriculture
  3. 6. A storm with thunder and lightning and typically also heavy rain or hail
  4. 7. Invisible rays that are part of the energy that comes from the sun, can burn the skin, and cause skin cancer.
  5. 9. Energy from a source that is not depleted when used, such as wind or solar power.
  6. 11. Fuels such as oil, coal and natural gas.
Down
  1. 1. The mixture of gases that surrounds the earth
  2. 3. gases that trap the heat of the sun in the earth's atmosphere, producing the greenhouse effect.
  3. 5. Rain mixed with sulphuric, nitric and other acids formed by gases released into the atmosphere when fossil fuels are burned
  4. 8. A prolonged period of abnormally low rainfall, leading to a shortage of water.
  5. 10. An overflow of a large amount of water beyond its normal limits, especially over what is normally dry land