1. Human Impact

2. How do humans affect the Earth?
Human activity can have a positive or a negative impact on the surface of our Earth.
We deplete resources found on Earth.
We pollute the environment when we use fossil fuels.

3. Types of Natural Resources
Renewable resources can be replenished within a relatively short time period.
Nonrenewable resources form very slowly, over millions of years. When present supplies are used, there will be no more.

4. Conservation
Through conservation strategies, people can slow down the degradation (damage) of the environment and the depletion of non-renewable resources.

5. Alternative Energy Sources
Wind electricity
Solar electricity
Hydroelectricity
These natural resources are renewable and produce little to no waste products.

6. Wind turns turbines that generate electricity.
Wind electricity
Wind turns turbines that generate electricity.

7. Solar electricity
Photovoltaic cells absorb solar radiation and convert into electricity.

8. Moving water turns turbines that generate electricity.
Hydroelectricity
Moving water turns turbines that generate electricity.

9. Good techniques for Conserving Soil
contour plowing
strip planting
cover crops
crop rotation
terrace farming
planting groundcovers
windbreaks
tree planting
mulching

10. Good techniques for Conserving Water
Short showers
Turn off water when brushing teeth
Run dishwasher only when it is full
Water plants early in the morning

11. Good techniques for Conserving Fossil Fuels
Walk or bike
Carpool
Use public transportation
Buy alternative fuel vehicles

12. How can I persuade others to practice conservation?

13. Design a Conservation Poster
Topics
Soil
Water
Plants
Pollution
Energy
Fossil fuels
Animals