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Earth Systems and Climate Change · Term 3

Atmospheric Composition and Structure

Investigating the layers of the atmosphere and the gases that compose it.

Key Questions

  1. Differentiate between the layers of Earth's atmosphere based on temperature and composition.
  2. Explain the role of the ozone layer in protecting life on Earth.
  3. Analyze how human activities have altered the composition of the atmosphere.

Ontario Curriculum Expectations

HS-ESS2-4
Grade: Grade 9
Subject: Science
Unit: Earth Systems and Climate Change
Period: Term 3

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