1. Renewable and Nonrenewable Resources
The _____ provides humans and all living organisms with many _________________.
The resources provided to all living things can be classified into two groups:
Earth
goods and services
Renewable resources
and
Nonrenewable resources

2. These are resources that…..
Renewable Resources
These are resources that…..
can regenerate if they are alive or can be replenished if they are nonliving.
A tree is a renewable resource since:
a new tree can grow if an older tree dies or is cut down.

3. Nonrenewable Resources
Examples include:
fossil fuels, such as coal, oil and natural gas.
These resources:
cannot be replenished by natural processes.
When a nonrenewable resource is depleted, it is gone forever.

4. Land Resources
Land is a resource that not only provides ______ for humans to live, but also provides the:
soils in which crops are grown.
space
If managed properly, soil is a __________ resource.
However, if it is mismanaged, it can be permanently ________.
renewable
damaged
Fertile soil is a mixture of sand, clay, rock particles and humus.
Humus is the material that comes from ______________.
dead organisms

5. One impact humans have had on soil is __________.
soil erosion
Plowing the land removes the roots that hold the soil in place.
Erosion is the wearing away of surface soil by water and wind.

6. In certain parts of the world with ____ climates, a combination of:
farming, overgrazing and drought has turned productive areas into _______.
dry
deserts
This process is called ____________ and can be guarded against by careful _______________.
desertification
land management

7. In many parts of the world, wood is still the ____ that is used for:
Earth’s forests not only provide essential __________________,
but they also serve essential:
ecological functions.
Forest Resources
resources for humans
Humans need the _____ from forests to make products ranging from ______________.
In many parts of the world, wood is still the ____ that is used for:
cooking and heating.
wood
homes to paper
fuel

8. Ecologically, the forests play a far greater role.
b) Photosynthesis uses the energy from the sun and stores this energy in molecules of glucose and other organic compounds. These molecules form the basis of every food chain and food web.
c) The forests provide: habitats for many other organisms.
d) The forests: moderate the climate.
a) Photosynthetic plants remove carbon dioxide from the atmosphere and replace it with oxygen.
e) Forests help to:
limit soil erosion.

9. Some forests may be considered __________ resources while others are _____________.
renewable
nonrenewable
The _________ forests of the northeastern United States can be considered __________.
Most of these forests have already been cut once and have grown back naturally.
temperate
renewable

10. This is the loss of forests.
Deforestation:
This is the loss of forests.
Deforestation

11. As trees are cut, they can be replanted.
There are many ways that the forests can be used for their resources if strategies are employed to maintain them:
Mature trees can be __________________ from a forest ecosystem, rather than:
clear-cutting large sections of the forest.
This will promote the growth of ____________ and ________ the forest ecosystem.
selectively harvested
younger trees
preserve
As trees are cut, they can be replanted.
_________ can be planted and harvested, making them renewable resources.
Tree farms
Geneticists are now breeding ____________ varieties that produce __________ wood.
faster-growing
high quality

12. Overfishing is harvesting fish faster…..
Fishery
Resources
Aquatic ecosystems are home to many species of ____ and other animals (__________________) that serve as food for _______________ worldwide.
fish
clams, crabs, shrimp
millions of people
Overfishing is harvesting fish faster…..
……than they can be replaced by reproduction.
It is causing a severe reduction in some fish species.

13. In 1950, it is estimated that the world catch of fish was about ____________.
19 million tons
By 1990, the world catch had increased to over _____________ of fish.
The population of some species of fish has ________ so low that scientists fear they may _________ altogether.
90 million tons
dropped
disappear
The fisheries of the oceans should be a _________ resource.
If managed _________, humans can ____ on fish as a source of ____ while maintaining the _____________.
renewable
effectively
rely
food
fish populations

14. the raising of aquatic animals for human consumption.
Aquaculture is:
the raising of aquatic animals for human consumption.
Aquaculture is a method that will….
….help sustain fish populations and provide food for humans.

15. Air Resources
Obviously, air is a resource that all living organisms are __________ upon.
The condition of the air affects the ______ of not only humans, but all living things.
dependent
health

16. Smog:
Smog is a mixture of chemicals in the air that appears as a haze in the atmosphere.
It is due primarily to….
…. automobile exhausts and industrial emissions.
Smog is considered a _________.
A pollutant is:
….a harmful material that can enter the biosphere through the land, air or water.
pollutant

17. burning of fossil fuels chemicals ash and dust
The __________________ fills the atmosphere with _________ as well as particles of ____________ that can cause health problems.
Fortunately, most industries today use technology to control the ________________________.
burning of fossil fuels
chemicals
ash and dust
emissions from smokestacks
Automakers also have strict emission standards that must be met on automobile exhausts.
As a result, air quality of most American cities is improving, but this is an on-going problem in other parts of the world.

18. ….kill plants, damage soils, and poison aquatic ecosystems.
When _________________ are released into the atmosphere, they combine with ___________ to form droplets of _____ acid and _______ acid.
nitrates and sulfates
Acid
Rain
water vapor
nitric
sulfuric
These droplets fall back to the land surface as _______.
acid rain
Acid rain can….
….kill plants, damage soils, and poison aquatic ecosystems.

19. Freshwater Resources
This is going to be FUN!!
Americans use _______________ of fresh water every day.
Even though water is a _________ resource, the supply of fresh water is _______.
billions of gallons
renewable
limited
Priority must be given to protecting water supplies from _________ and finding ways to better manage our _________________.
pollution
water consumption

20. Pollutants enter water supplies in several ways:
a) Chemicals are often improperly discarded.
b) The heavy use of fertilizers and pesticides enter waterways through runoff water.
c) Discarded wastes can seep through the soil and enter underground water supplies.
d) Domestic sewage from sinks and toilets contains nitrogen and phosphorus compounds that cause algae blooms and growth of bacteria in aquatic habitats.