1. Renewable and Non-Renewable Resources

2. Think – Pair –Share (Don’t write)
There is a dish of M&M’s in the classroom. Everyone has access to it. It will not be refilled.
Who benefits from taking an M&M?
Does anyone benefit from leaving M&M’s behind?

3. The Tragedy of the Commons
When everyone has access to a valuable resource, the resource is very likely to be overharvested.
No obvious benefit from managing the resource because someone else can take it.

4. Non-Renewable Resources
Non-renewable resources cannot be replenished by natural processes.
Coal
Natural gas
Oil

5. Renewable Resources
Renewable can grow back if they are alive or replenished by a biogeochemical cycle
Trees
Soil
Air
Water

6. Sustainable Development
A way to use natural resources without depleting the resource or damaging the environment
Also called “green technology”

7. Land Resources Soil erosion
In most places, natural soil is held in place by plants adapted to the climate.
When crops are planted instead, the soil is loosened and can be blown or washed away

8. Land Resources Desertification
Soil loss due to farming, overgrazing and drought can cause certain productive areas to become a desert
Major problem in the Sahel Region of Africa

9. Forest Resources
Forests provide a habitat for many different animals and plants
Convert carbon dioxide to oxygen during photosynthesis
Store carbon as sugar in trees.

10. Forest Resources Old-growth forest New-growth forest Never been logged
High variety of species
New-growth forest
Forest that have grown back after logging
Beneficial, but tend to have fewer species.

11. Deforestation The loss of forest through logging or urban development
Exposure of soil to rain and wind after the trees are gone can lead to soil erosion
This can lead to preventing the forests from growing back

12. Fishery Resources
Humans have used the ocean and lakes for a food source.
Because no one owns oceans, they are prone to be overused

13. Fishery Resources
Overfishing – harvesting fish faster than they can naturally reproduce
Causes fish populations to decline or become extinct.
Solution: Setting limits on how many fish can be taken per season.

14. Fishery Resources Aquaculture- growing fish in large pens offshore
Pro: Protects the natural population from fishing pressures
Cons: Can cause water pollution and spread disease to natural populations.

15. Air Resources The quality of the air affects people every day.
particles from burning gasoline
Acid Rain- Burning gasoline creates chemicals that react to form acids in the air.
This can kill plants and animals

16. Freshwater Resources Humans need fresh water to drink.
Fresh water can be polluted by
Discarded chemicals
Sewage
Fertilizers
Microorganisms

17. Freshwater Resources Freshwater can be protected by
Proper disposal of wastes
Protection of forest – filter water as it runs off
Protect wetlands- act as another filter
Conserving water in day-to-day life.