unit 7

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Across
  1. 4. – the process in which carbon atoms are cycled between abiotic and biotic factors on Earth
  2. 5. – human destruction of natural forested areas
  3. 6. – when heat is trapped in Earth’s atmosphere instead of reflecting into space
Down
  1. 1. – the process of people moving from rural areas to urban areas / cities
  2. 2. – gases that trap heat in the atmosphere and re-radiate back to Earth’s surface
  3. 3. – an occurrence with no influence due to human impact