1. HUMAN IMPACT on the BIOSPHERE Part 2 Renewable and Non-renewable Resources

2. regenerate RENEWABLE ________________ RESOURCES
can ____________ if they are alive OR
be replaced by biogeochemical ________
if they are non-living
regenerate
cycles

3. RENEWABLE RESOURCES “Renewable” depends on context
Ex: An _________tree
can be re-grown, but a
__________ of trees in
an ecosystem may
NOT be replaceable
individual
population

4. NONRENEWABLE RESOURCES
Renewable does NOT mean __________________
Ex: ______________ is a renewable resource but can become limited by
_______ OR ________
unlimited
Fresh water
drought overuse

5. NONRENEWABLE RESOURCES
NOT BE replenished
can ___________________________ by natural processes

6. land, forests, fisheries, air, and fresh water
THE BIG QUESTION ?
Human activities can affect the
_____________________of renewable
resources such as:
How can we provide for our needs while maintaining ecosystem goods and services that are renewable?
quality and supply
land, forests, fisheries, air, and fresh water

7. SUSTAINABLE DEVELOPMENT
One ANSWER to ?
SUSTAINABLE DEVELOPMENT
= ____________________________
It’s a way of _________ natural
resources __________________ them
and providing for human needs
WITHOUT causing long term __________________
using
without depleting
environmental harm

8. REMEMBER NATURAL RESOURCES = LAND AIR WATER FORESTS RESOURCE
REMEMBER
A __________________
is anything an organism
needs for life
RESOURCE
NATURAL RESOURCES =
LAND
AIR
WATER
FORESTS

9. LAND RESOURCES Provide _________ for space human communities
for industry
space
raw materials

10. Land resources include __________ which is a ______________ resource
if managed properly.
____________is made of sand, clay, rock, and _________(decayed organisms) and is
produced and maintained by interactions between soil and plants growing in it.
SOIL
renewable
TOPSOIL
humus

11. LAND RESOURCES
Wearing away of topsoil = ____________ is caused by plowing land and removing plant roots
Soil erosion

12. LAND RESOURCES
___________________ = changing of fertile land in dry climates into desert areas caused by farming, overgrazing, and drought
Desertification

13. Sustainable Agriculture
Section 6-4
Controlled Grazing
By managing graze periods and herd
densities, farmers can improve nutrient
cycling, increase the effectiveness of
precipitation, and increase the carrying
capacity of pastures.
Cover Crops
Legumes, grasses, and other
cover crops recycle soil nutrients,
reduce fertilizer need, and
prevent weed growth.
Biological Pest Control
The use of predators and parasites
to control destructive insects
minimizes pesticide use as well as
crop damage A B C
Yr. 1
corn
oats
alfalfa
Contour Plowing
Contour plowing reduces
soil erosion from land runoff.
On hilly areas, plowing is done
across the hill rather than
straight up and down.
Yr. 2
Crop Rotation
Different crops use and
replenish different nutrients.
By rotating crops, the loss
of important plant nutrients
is decreased.
alfalfa (plowed in)
corn
alfalfa
Yr. 3
oats
alfalfa
corn

14. FOREST RESOURCES Provide _________ for products ranging from
homes to paper
Wood provides
_________
in many countries
wood
fuel

15. FOREST RESOURCES Forests have been called the “lungs of the Earth”
because they
remove
________________
and produce
______________
carbon dioxide
oxygen

16. FOREST RESOURCES Forests also: Store ___________ Provide_________
FOREST RESOURCES
Forests also:
Store ___________
Provide_________
Moderate ________
_______soil erosion
Protect fresh ______
nutrients
habitats
climate
prevent
water

17. Loss of forests = ____________
FOREST RESOURCES
Loss of forests = ____________
can result in erosion and loss of nutrients preventing regrowth
deforestation

18. HOW DO WE HELP?
Sustainable development:
selective harvest of mature trees
replanting of logged areas
tree farms
breeding new, faster growing species

19. AIR RESOURCES Pollutant
______________ = harmful material that can enter the biosphere through land, air, or water
_________ = Mixture of chemicals that appear as a gray-brown haze in the atmosphere
smog

20. AIR RESOURCES fossil fuels Burning __________ releases pollutants
that cause smog and other problems
in atmosphere.
Toxic chemicals
like nitrates, sulfates, and particulates can cause ________________
like ___________
fossil fuels
breathing problems
asthma

21. SUSTAINABLE DEVELOPMENT
Smokestack “Scrubbers” control emissions
Auto emission standards
Clean air regulations
Reduce use of fossil fuels

22. FRESH WATER RESOURCES Americans use BILLIONS of gallons of
freshwater daily for ________, ________
and ___________________
drinking
washing
watering crops

23. FRESH WATER RESOURCES renewable
Although water is a ______________ resource, the total supply of fresh water is __________.
limited

24. SUSTAINABLE DEVELOPMENT
Water conservation
Protect wetlands
and forests
Water treatment plants
Clean water regulations
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25. DON’T FORGET THE WATER WE CAN’T SEE!
The PRODUCTION OF:
1 kg wheat costs 1,300 L water
kg rice costs 3,400 L water
1 kg eggs costs 3,300 L water
1 kg beef costs 15,000 L water
1 cotton shirt costs 2,500 L water
1000 g of blue jeans costs 10,850 liters water
1 ton passenger car costs 400,000 liters of water
Building a house uses about 6 million liters of water