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Using Resources Wisely

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 __________.

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Using Resources Wisely

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  1. Using Resources Wisely Section 6.2

  2. Soil • Healthy 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.

  3. Dust Bowl • In 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.

  4. High-yield food production Consumption of fossil fuels and fertile soil Pollution of air and water Facilities for homes and businesses Pollution from waste production. Burning of fossil fuels Luxuries and conveniences of modern life Waste production Burning fossil fuels Pollution of air, water and soil

  5. 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

  6. Forests • Provide: • ________________ • Removes _______________ from atmosphere • ____________ soil in place • Wood • Home to many species, providing food and shelter • Helps to moderate climate

  7. 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.

  8. Sustainability • To minimize soil erosion through careful management of both agriculture and forestry. • Leave stem in _______ in soil • _______________ • _____________ plowing • Reduces water runoff • Plant trees that promote growth of younger trees

  9. Water Pollution • Harmful materials that enter our water supply. • ___________ • Medical waste • _______________ • ___________ released into air by factories and automobiles. • Residential _________

  10. DDT • DDT is a very dangerous __________ that lasts a long time. • It controls agricultural pests and disease-carrying mosquitoes • When 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 ___________________.

  11. 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.

  12. 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 rotation • Use of less-poisonous sprays • ________________________ • Drip irrigation

  13. Air Pollution • Common forms of air pollution include: • ____________ • ____________ • ____________ • ____________

  14. Smog • A gray-brown haze formed by _________________ among pollutants released into the air by industrial an automobile _______________.

  15. Acid Rain • When _______________ 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 plants • Change _________________ of soil • Damage structures

  16. Particulates • Microscopic particles of _______________________ released by certain industrial processes and diesel engines. • Can cause serious health problems with ___________.

  17. Sustainability • Improving automobile ________________ standards

  18. E-Waste • 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”.

  19. Ecological Footprint • Is 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.

  20. Ecological Footprint • TOTAL AMOUNT OF RESOURSES FOR: • __________ • Food • __________ • Shelter • Removal of __________ • Removal of greenhouse gases

  21. 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 _______________.

  22. By recognizing a problem in the environment, we can: • Recognize a ____________ in the environment • Determine its _______________ • ___________ our behavior • Create a _________ impact on the _______________

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