Advanced Topics
In a nutshell: Pollution harms the environment and human health, and addressing it is a global priority.
## Types of Pollution
Pollution is the introduction of harmful substances into the environment. Major types include air, water, and soil pollution.
### Sources and Effects
- **Air Pollution:** Emissions from vehicles and factories cause smog and respiratory problems.
- **Water Pollution:** Runoff from farms and waste from industries contaminate rivers and oceans.
- **Soil Pollution:** Pesticides and heavy metals harm soil and food safety.
### Health Impacts
Pollutants can cause diseases, disrupt ecosystems, and reduce biodiversity.
## Environmental Justice
Pollution often affects vulnerable communities the most, highlighting the need for fair policies.
Examples
- Lead in drinking water causes serious health problems in children.
- Acid rain damages forests and buildings.