Easter Island PowerPoint

Jun 4th, 2016
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Easter Island is a metaphor for the Earth in terms of sustainability and what could happen to our society if we're not careful wit our resources.

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A.2 Easter Island:A Lesson in SustainabilityWHERE IS EASTER ISLAND?2000 mileswest of SouthAmerica Named April 5,1722 on EasterSunday byDutch ExplorerJacobRoggeveen.THE MOI+ 900 statues at edge of island Weigh 80 to 270 tons. Source quarry 6 miles fromstatues Island has no trees, shrubs,vines (raw material for rope,etc.) How did statues get to wherethey are?What happened to EasterIsland?When discovered(+ 300 A.D.)Easter Island TodayWHAT TYPES OF RESOURCESWERE ORIGINALLY PRESENT? PERPETUAL RESOURCE solar energy, wind. RENEWABLE replenishing within humantimeframe through natural processes (i.e. trees,etc.) NONRENEWABLE Not replenishing within humantimeframe through natural processes (i.e. minerals,etc.) POTENTIALLY RENEWABLE renewableresources used faster than replenishment rate(unsustainability).How do scientists know it was oncelush? Cores drilled into old lake bottom sedimentcontain pollen from > 20 plant species(trees, vines, flowers, etc.) Cave drawings from early people depictedtrees. Studies show (750 A.D. - 1400 A.D.) treesand other plants largely vanished.Original Resources on Easter IslandPrimary producers plants that produce ownfood through photosynthesis.These plants were:1. sources of food for animals.2. renewable resources(timber, rope, fuel wood, fiberfor clothes, logs to rollstatues).WHAT WENT WRONG?Deforestation unsustainable us

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