Renewable Resources
A resource that is replenished, or renewed over ______ periods of time
Examples include: _________ _________ _________ _________
A renewable resource can become nonrenewable if extracted more ________ than being replaced
Renewable Resources
A resource that is replenished, or renewed over short periods of time
Examples include: Soil Freshwater Wild Animals Timber
A renewable resource can become nonrenewable if extracted more quickly than being replaced
Nonrenewable Resources
A resource that is formed much more _________ than it is used
Examples include: Fossil fuels such as ______, _______
___, and ________ ____
Once nonrenewable resources are completely depleted, or used up, they are gone ________
Nonrenewable Resources
A resource that is formed much more slowly than it is used
Examples include: Fossil fuels such as coal, crude oil,
and natural gas
Once nonrenewable resources are completely depleted, or used up, they are gone forever.
Sustainability
A resource is considered sustainable if it can continue at the ______ rate into the foreseeable future
In recent years, consumption of natural resources has _________ to unsustainable levels, driven by the growth of the ______ human population in history
Sustainability
A resource is considered sustainable if it can continue at the same rate into the foreseeable future
In recent years, consumption of natural resources has increased to unsustainable levels, driven by the growth of the largest human population in history
Resource Management
Managing of resource harvesting so that resources are not ________
All natural resources, both renewable and nonrenewable, serve functions in their ____________, so we must harvest them ____________ in order to maintain the health of those ecosystems
Resource Management
Managing of resource harvesting so that resources are not depleted
All natural resources, both renewable and nonrenewable, serve functions in their ecosystems, so we must harvest them sustainably in order to maintain the health of those ecosystems
Soil
Always being made by natural processes such as the weathering and erosion of rocks and the decomposition of organisms Top layer, or topsoil, is made very slowly
One inch can take hundreds of years to form
Needed to nourish plants (crops, forests, other plant communities)
Soil degradation – Any undesirable change or disturbance to the soil
Desertification – degradation of dryland ecosystems can lead to formation of deserts – unsustainable farming practices near deserts
Fresh Water
Webquest: Where does it come from?
Globally? Locally?
What is freshwater used for? What is most of it used for in U.S.?
What are some issues associated with water management?
Fresh Water
3% of water on earth is freshwater
2.4% is permanently frozen in glaciers and at the polar ice caps
0.5% is ground water
1% is in rivers and lakes (surface water)
KS, MO – Missouri River
Water in KC – clean, used, cleaned again
Early Days: from cisterns and wells – waterborne illnesses, no fire protection
1874 – city’s first waterworks – 5 million gallons of drinkable water per day from the Kaw River
Today – Kansas City Water Services – 240 million gallons of water each day from the Missouri River 2,800 miles of water mains/pipes Test 60 samples a day for over 300
contaminants
Water in the U.S. Many cities’ water supplies are
from outside sources – water diversion and reservoirs
Dams store water (irrigation, drinking, home use, generating electricity, industry), but can alter scenic area, displace people, and alter natural wildlife habitats (disrupts fish migrations and alters water’s temperature and oxygen content)
Water supplies are shrinking and pollution is increasing
Water Use Average American home, each person uses about 80 gallons of water
per day (75% of which is used in the bathroom; 22% washer)
4 gallons of drinking water for a dairy cow = one gallon of milk 39090 gallons of water to make a new car 62600 gallons to produce one ton of steel 300 million gallons to produce single day’s supply of US newsprint Water Issues – availability of freshwater (pollution, overuse, habitat
reconstruction, fish breeding patterns, etc.)
Sector Percent Use/Person/Day
Domestic (home)/Commercial
11.5 155 gallons
Industrial/mining 8.2 110 gallons
Thermoelectric power 38.6 518 gallons
Agriculture 41.7 558 gallons
Wild Animals
Why are animals hunted?
What contributes to decline of animal populations?
What is the difference between hunting and poaching?
Research one animal that is threated or endangered and tell use where it is, what the population numbers are like, and what contributes to its decline.
Wild Animals
Use Food Population control Products (furs, medicines, etc.)
Decline Habitat loss Hunting Poaching – illegal hunting Pollution By-catch
Endangered species (IUCN Website) Galapagos Pink Land Iguana Critically Endangered Endemic to Isla Isabela Single population - 200 adults left Northern slopes of Volcan Wolf More vulnerable to natural threats Invasive species prevention and breeding program in
place
Timber
What is timber?
“Your National Forests” Inquiry Activity Continue on this activity today –
finish for homework for Wednesday (9/10)
Timber
Wood from trees, or timber, is the raw material for an amazing variety of products you need every day Forests in developed nations are
slowly regrowing due to better forestry management
Forests in developing nations, however, including rain forests, are disappearing at an alarming rate
Overall more forests are lost than regrow
Timber
http://www.fs.fed.us/locatormap/
Deforestation & Habitat Fragmentation
“Your National Forests” Inquiry Activity Continue on this activity today –
finish for homework for Wednesday (9/10)