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

_______________