Astronomy › Section G · The solar system and Earth › Topic G.7
Life, climate change, and cosmic influences on Earth
Life did not simply adapt to Earth; it remade the planet's air. Today one species is changing the climate, and rocks from space have reset the course of evolution more than once. This topic follows how life, climate and the cosmos shape one another.
In this topic
- A planet and its life evolve together
- Early life
- Life makes oxygen
- The greenhouse effect
- Worked example: Earth without a greenhouse
- Humans and carbon dioxide
- Worked example: how fast is carbon dioxide rising?
- A warming world
- Craters on Earth and recent impacts
- The impact that ended the dinosaurs
- Common mistakes to avoid
- Key takeaways
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