AP®︎ Environmental Science Unit 9: Notes & Study Guide
Prepare for your quiz, test, or the AP exam with a comprehensive review on Unit 9 of AP Environmental Science – Global Change.
Unit 9: Global Change
This unit analyzes global environmental changes like climate change, ocean impacts, biodiversity loss, and solutions to these challenges.
Begin with Topic 9.1: Stratospheric Ozone Deple...To review Unit 9, go through each of the 10 topics below.
Everything you actually need to know for your Unit 9 test, pulled directly from the AP® Environmental Science curriculum.
Stratospheric Ozone Depletion
Stratospheric Ozone Depletion
- What Stratospheric Ozone Is
- How the Ozone Layer Works
- What Causes Ozone Depletion
Reducing Ozone Depletion
Reducing Ozone Depletion
- Why Replacing CFCs Reduces Ozone Depletion
- CFC Substitutes and Their Trade-Offs
- How Mitigation Works in Practice
The Greenhouse Effect
The Greenhouse Effect
- What the Greenhouse Effect Is
- The Principal Greenhouse Gases
- How the Enhanced Greenhouse Effect Happens
Increases in the Greenhouse Gases
Increases in the Greenhouse Gases
- What Increased Greenhouse Gases Do
- Major Threats from Increased Greenhouse Gases
- Rising Sea Level
Global Climate Change
Global Climate Change
- What Global Climate Change Is
- Evidence of Climate Change Through Time
- Major Physical Changes and Their Ecosystem Effects
Ocean Warming
Ocean Warming
- What Ocean Warming Is
- How Ocean Warming Affects Marine Organisms
- Coral Bleaching
Ocean Acidification
Ocean Acidification
- What Ocean Acidification Is
- Where the Extra CO₂ Comes From
- How CO₂ Lowers Ocean pH and Reduces Carbonate
Invasive Species
Invasive Species
- What Invasive Species Are
- How Invasions Happen and Why Some Species Succeed
- How Invasive Species Harm Ecosystems
Endangered Species
Endangered Species
- What Endangered Species Are
- Why Species Become Endangered
- Traits That Change Extinction Risk
Human Impacts on Biodiversity
Human Impacts on Biodiversity
- What Human Impacts on Biodiversity Are
- The HIPPCO Causes of Biodiversity Loss
- Habitat Fragmentation and Why Scale Matters
Notes
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