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Practice: The Ozone Layer

Why is the ozone layer essential to surface-dwelling life on Earth?

  • AThe ozone layer filters out harmful UV rays from the Sun.
  • BThe ozone layer helps birds navigate during their yearly migrations.
  • CThe ozone layer provides a weather-free zone for aircraft to fly through.
  • DThe ozone layer allows clouds to form as part of the water cycle.
  • EThe ozone later acts as a shield preventing meteors from hitting the surface of Earth.

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