1. Impacts of people on earth
Ch. 7 Review
Impacts of people on earth

2. Ways to reduce smog (air pollution)
Carpool
Take public transportaion
Cars are the #1 cause of smog. You can reduce smog by carpooling, walking, biking, or taking public transportation.

3. Population Explosion
The population of people on Earth is growing exponentially.

4. What happens if there is less vegetation?
Plants use carbon dioxide and produce oxygen. What is the result of less vegetation?

5. Our impact on the environment
Positive
Negative

6. Unsafe: motor oil, paint, battery acid
Safe for the drain?
Safe: vinegar
Unsafe: motor oil, paint, battery acid

7. Composting: piling up grass and leaves so they can decompose

8. Know these vocabulary words
Carrying capacity
Desertification
Nonpoint-source pollution
Particulate matter
Population
Reforestation
Urban sprawl