College Board-Aligned Original Notes
AP Environmental Science Unit 8 Topic 6: Pathogens and infectious diseases
Connect Pathogens and infectious diseases to a model, the evidence that supports it, and the variables that change the system.
Unit 8: Aquatic and Terrestrial Pollution. College Board exam weighting listed for this unit: 7%-10% of exam score.
What to Know
- Identify the system, surroundings, and scale before explaining a process.
- Use diagrams, graphs, and tables as evidence rather than decoration.
- For quantitative questions, keep units visible from the setup through the final answer.
- Always connect this topic back to the larger unit: Aquatic and Terrestrial Pollution.
Detailed Notes
Pathogens and infectious diseases belongs to Aquatic and Terrestrial Pollution, so study it as part of a larger scientific system rather than as a stand-alone fact. Start by identifying what is being described, what is changing, and what evidence would let you defend a claim.
In AP Environmental Science, strong answers usually connect a visible pattern to an underlying mechanism. That means explaining not only what happens, but why it happens at the particle, organism, environmental, or system level.
For AP-style questions, expect this topic to appear with graphs, diagrams, data tables, experiments, or written scenarios. Your job is to describe the evidence, apply the correct concept, and explain the reasoning that connects them.
Quick Practice
How would you explain Pathogens and infectious diseases in one or two AP-style sentences?
Name the concept, apply it to a specific example or source, and explain the reasoning that connects the evidence to your answer.
Related Topics in This Unit
- Sources of pollution
- Human impact on ecosystems
- Thermal pollution
- Solid waste disposal and waste reduction methods