Renewable and Non Renewable Resources Think Pair Share
Renewable and Non. Renewable Resources
Think – Pair –Share (Don’t write) o There is a dish of M&M’s in the classroom. Everyone has access to it. It will not be refilled. n n Who benefits from taking an M&M? Does anyone benefit from leaving M&M’s behind?
The Tragedy of the Commons o When everyone has access to a valuable resource, the resource is very likely to be overharvested. n No obvious benefit from managing the resource because someone else can take it.
Non-Renewable Resources o Non-renewable resources cannot be replenished by natural processes. n n n Coal Natural gas Oil
Renewable Resources o Renewable can grow back if they are alive or replenished by a biogeochemical cycle n n Trees Soil Air Water
Sustainable Development o o A way to use natural resources without depleting the resource or damaging the environment Also called “green technology”
Land Resources o Soil erosion n n 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
Land Resources o Desertification n Soil loss due to farming, overgrazing and drought can cause certain productive areas to become a desert o Major problem in the Sahel Region of Africa
Forest Resources o o o Forests provide a habitat for many different animals and plants Convert carbon dioxide to oxygen during photosynthesis Store carbon as sugar in trees.
Forest Resources o Old-growth forest n n o Never been logged High variety of species New-growth forest n n Forest that have grown back after logging Beneficial, but tend to have fewer species.
Deforestation o The loss of forest through logging or urban development n n 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
Fishery Resources o o Humans have used the ocean and lakes for a food source. Because no one owns oceans, they are prone to be overused
Fishery Resources o Overfishing – harvesting fish faster than they can naturally reproduce n o Causes fish populations to decline or become extinct. Solution: Setting limits on how many fish can be taken per season.
Fishery Resources o Aquaculture- growing fish in large pens offshore n n Pro: Protects the natural population from fishing pressures Cons: Can cause water pollution and spread disease to natural populations.
Air Resources o o o 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. n This can kill plants and animals
Freshwater Resources o o Humans need fresh water to drink. Fresh water can be polluted by n n Discarded chemicals Sewage Fertilizers Microorganisms
Freshwater Resources o Freshwater can be protected by n n 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.
- Slides: 17