HUMAN IMPACT on the BIOSPHERE Part 2 Renewable

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

RENEWABLE ________ RESOURCES can ______ regenerate if they are alive OR cycles be replaced by biogeochemical ____ if they are non-living http: //www. inclusive. co. uk/downloads/images/pics 2/tree. gif http: //www. sfu. ca/aq/archives/Nov 2007/features/fish_story. html http: //www. navitron. org. uk/wind/600 kw. JPG

RENEWABLE RESOURCES “Renewable” depends on context individual Ex: An _____tree can be re-grown, but a population of trees in _____ an ecosystem may NOT be replaceable http: //image. guardian. co. uk/sys-images/Guardian/Pix/gallery/2002/08/30/deforestedland. jpg

NONRENEWABLE RESOURCES Renewable does NOT mean _________ unlimited Fresh water is a renewable Ex: _______ resource but can become limited by drought overuse _______ OR ____ http: //earth. ooups. com/uk/images/100/tapwater. jpg http: //www. wrightwoodcalif. com/watershort/Conserve. Water. JPG

NONRENEWABLE RESOURCES NOT BE replenished can ______________ by natural processes http: //www. greenpeace. org/raw/image_full/international/photosvideos/photos/illegal-deforestation-and-land. jpg http: //www. npr. org/news/images/2005/aug/16/pumping_gas 200. jpg

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

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

http: //www. newtonswindow. com/problem-solving. htm REMEMBER RESOURCE A _________ is anything an organism needs for life NATURAL RESOURCES = LAND AIR WATER http: //coweeta. ecology. uga. edu/coweeta_photographs/erosion. htm FORESTS http: //www. lenntech. com/images/discharge. gif

LAND RESOURCES space for Provide _____ human communities http: //www. fotogalerie-naturpur. de/pic/land 1. html Provide _______ raw materials for industry http: //lloydsfunds. com/mining_12. jpg

LAND RESOURCES SOIL Land resources include _____ renewable which is a _______ resource if managed properly. TOPSOIL ______is made of sand, clay, rock, and _____(decayed organisms) and is humus produced and maintained by interactions between soil and plants growing in it.

LAND RESOURCES Wearing away of topsoil = Soil erosion is caused by plowing ______ land removing plant roots http: //coweeta. ecology. uga. edu/coweeta_photographs/erosion. htm

LAND RESOURCES Desertification __________ = changing of fertile land in dry climates into desert areas caused by farming, overgrazing, and drought http: //www. the-human-race. com/images/environment/drought. jpg

Section 6 -4 Cover Crops Legumes, grasses, and other cover crops recycle soil nutrients, reduce fertilizer need, and prevent weed growth. Sustainable Agriculture 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. A B Biological Pest Control The use of predators and parasites to control destructive insects minimizes pesticide use as well as crop damage C Yr. 1 corn 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. oats alfalfa Yr. 2 corn alfalfa Yr. 3 oats alfalfa (plowed in) corn Crop Rotation Different crops use and replenish different nutrients. By rotating crops, the loss of important plant nutrients is decreased.

FOREST RESOURCES wood Provide _____ for products ranging from homes to paper http: //www. nature. org/images/sotw_logging. jpg Wood provides fuel _____ in many countries http: //www. forestlearn. org/graphics/wood_fuel. jpg

FOREST RESOURCES Forests have been called the “lungs of the Earth” because they remove carbon dioxide ________ and produce oxygen _______ http: //www. ecoworld. com/air/Images/Photosynthesis. jpg

http: //www. gdccc. org/Records/EOY 2004/NS%20 Salon%20 HM%20 Brittain%20 Roger%20 Owl%20 in%20 Hole%20 No%202. jpg FOREST RESOURCES Forests also: nutrients Store ______ habitats Provide_____ climate Moderate ____ prevent _______soil erosion water Protect fresh ______

FOREST RESOURCES Loss of forests = ______ deforestation can result in erosion and loss of nutrients preventing regrowth http: //www. greenpeace. org/raw/image_full/international/photosvideos/photos/illegal-deforestation-and-land. jpg

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

AIR RESOURCES Pollutant _______ = harmful material that can enter the biosphere through land, air, or water smog = _____ Mixture of chemicals that appear as a gray-brown haze in the atmosphere http: //www. cyberolimpiadas. com. sv/proyectos 2004/gamma/proyecto 3/smog. jpg

AIR RESOURCES fossil fuels releases pollutants Burning _____ that cause smog and other problems in atmosphere. Toxic chemicals like nitrates, sulfates, and particulates can cause breathing problems ________ asthma like ______ http: //www. cyberolimpiadas. com. sv/proyectos 2004/gamma/proyecto 3/smog. jpg

SUSTAINABLE DEVELOPMENT • Smokestack “Scrubbers” control emissions • Auto emission standards • Clean air regulations • Reduce use of fossil fuels http: //www. alexvisani. com/darkgallery/smog. jpg

FRESH WATER RESOURCES Americans use BILLIONS of gallons of drinking ____ washing freshwater daily for ____, watering crops and __________ http: //www. thesolutionsite. com/lesson/4601/freshwater. jpg

FRESH WATER RESOURCES renewable Although water is a _______ resource, the total supply of fresh water is _____. limited http: //www. mos. org/oceans/graphics/planet/watercycle. jpg

SUSTAINABLE DEVELOPMENT • Water conservation • Protect wetlands and forests • Water treatment plants • Clean water regulations hhttp: //www. romanviii. co. uk/bp/nhpage. asp? pcat=about_us

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