using resources wisely
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Using Resources Wisely . Section 6.2. Soil. Healthy soil supports both __________ and _____________. ____________ absorbs and retains __________ and allows it to drain through. It is full of __________ matter and __________. - PowerPoint PPT PresentationTRANSCRIPT
Section 6.2
Using Resources Wisely
SoilHealthy soil supports
both __________ and _____________.
____________ absorbs and retains __________ and allows it to drain through.It is full of __________
matter and __________.Healthy soil can take
____________ to form but can be lost very quickly.
Dust BowlIn the 1930s, severe drought ____________
the soil of the _________________. Thousands of people lost their jobs and
homes.The area turned into a dessert due to soil
erosion.
Activity Positive Consequences
Negative Consequences
Agriculture
Development
Industrial Growth
High-yield food production
Consumption of fossil fuels and fertile soilPollution of air and water
Facilities for homes and businesses
Pollution from waste production.Burning of fossil fuels
Luxuries and conveniences of modern life
Waste productionBurning fossil fuelsPollution of air, water and soil
Soil Erosion_________________ is when soil is removed by
_______ and ____________.When land is left _____________, and there
are no roots from plants and trees to hold soil together, the organic matter and minerals of that soil is ________________.
_________________: changing farmland into desert.___________________Overgrazing___________________Climate change
ForestsProvide:
________________Removes _______________ from atmosphere____________ soil in place Wood Home to many species, providing food and
shelterHelps to moderate climate
Deforestation_______________: loss of forests that has
negative effects on soil.Remember succession will take
______________ to produce mature forests.In the tropics, forests ________ grow back
after logging.Forests are considered nonrenewable
resource. Topsoil in tropical rainforests is
______ and organic matter _______________ rapidly under high heat and humidity.
When deforestation occurs in this type of area, the area become a ____________ and prevents regrowth.
SustainabilityTo minimize soil
erosion through careful management of both agriculture and forestry.Leave stem in
_______ in soil ____________________________
plowingReduces water runoff
Plant trees that promote growth of younger trees
Water PollutionHarmful materials
that enter our water supply.___________Medical waste__________________________ released into air by factories and automobiles.
Residential _________
DDTDDT is a very dangerous __________ that
lasts a long time.It controls agricultural pests and disease-
carrying mosquitoesWhen DDT gets into a _________________,
organism introduce it to their bodies.It is not broken down or eliminated from the
body. It is ___________ in the organism’s ___________________.
Biological Magnification Plants ---- Herbivores ----
Carnivores ---As the DDT moves up a
____________ in a food chain, it becomes more ________________.
This is also true with ___________ in tuna and swordfish.
Sustainability__________________________
Protecting all land whose groundwater, streams, and rivers drain into a large lake or river.
These surrounding ecosystems filter out certain pollutants and must be protected.
_________________________Instead of pesticides, predators and parasites
are use to regulate for pest insects.Crop rotationUse of less-poisonous sprays
________________________Drip irrigation
Air PollutionCommon forms of air pollution include:
____________________________________ ____________
SmogA gray-brown haze formed by
_________________ among pollutants released into the air by industrial an automobile _______________.
Acid RainWhen _______________ are burned, nitrogen
and sulfur compounds are released into the air.
When they combine with water vapor, they produce ___________ and _____________ acids = acid rain.It can damage leaves of plantsChange _________________ of soil Damage structures
ParticulatesMicroscopic particles of
_______________________ released by certain industrial processes and diesel engines.
Can cause serious health problems with ___________.
SustainabilityImproving automobile ________________
standards
Electronic waste may be defined as discarded computers, office electronic equipment, entertainment device electronics, mobile phones, television sets and refrigerators.
CRTs (Cathode ray tubes) have relatively high concentration of lead and phosphors, both of which are necessary for the display.
The United States Environmental Protection Agency (EPA) includes discarded CRT monitors in its category of "hazardous household waste”.
E-Waste
Ecological FootprintIs the total area of
functioning land and water ecosystems needed both to provide the resources an individual or population uses and to absorb and make harmless the wastes that individual or population generates.
It is an _________
calculation of the
biosphere’s
__________
___________ for
humans.
Ecological FootprintTOTAL AMOUNT OF RESOURSES FOR:__________Food__________ShelterRemoval of __________Removal of greenhouse gases
The ecological footprint measures the ___________ area (land and sea) required to ____________ maintain current consumption.
It is measured in global hectares and expressed as the number of _______________ needed to support a certain activity.
Our ecological overshoot means 1.5 planets would now be required to sustainably support our use of resources.
We make up the _________ by depleting fish stocks, forests and other resources, and by building up ___________ and _______________.
By recognizing a problem in the environment, we can:Recognize a ____________ in the environmentDetermine its __________________________ our behaviorCreate a _________ impact on the
_______________