AP Environmental Science / Unit 7: Atmospheric Pollution
7.4 Atmospheric CO2 and Particulates
Notes
$\mathrm{CO_2}$ comes from combustion and respiration; it's a greenhouse gas.
- Particulate matter ($\mathrm{PM_{10}}$, $PM_{2.5}$): soot, dust, smoke. Smaller particles reach deeper into the lungs.
Practice
Which particles are most dangerous to lungs?
Smaller particles go deeper.
Particulates can come from:
Many sources.
Atmospheric $\mathrm{CO_2}$ has risen mainly because of:
Human activity.
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