Presentation on theme: "Chapter 39 questions and answers"— Presentation transcript:
1Chapter 39 questions and answers Ecological footprintChapter 39 questions and answers
21. Define: ecological footprint, carrying capacity, sustainability, fair earthshare, ecological overshoot, industrial revolution, productive land.Ecological Footprint – measure of total human impact on ecosystem.Carry Capacity - # of peops supported at current standard of living by Can’s productive land.Sustainability – development meets current needs without depleting resources for future generations.Fair earthshare – measurement of world’s productive land divided by # world population. Amount of world’s productive land each person would be entitled to if all of land was shared equally.Ecological overshoot –the amt. of resources we demand that is beyond the Earth’s supply.Productive land – land that is available to support a person’s activities and used to measure a person’s EF.
3Industrial Revolution – a time in England 1700’s when water power and steam was introduced into factories which increased the size and output of industries.
42. What land and water does the EF represent and why? Many small pieces of land and water all over the world b/c people use resources from all over the world and create waste close to home and far away.
53. What is the average EF for one average Canadian 3. What is the average EF for one average Canadian? What does this represent?6.45 hectares of land which represents the amt. of productive land needed to support the lifestyle of an average Canadian.
64. Give examples of parts of your ecological footprint that would be located in your community, in a nearby part of Canada, in a distant part of Canada, in a foreign country.communityNearby in CanDistant CanForeign countryChudleigh’s-applesToronto -Blue Jays gameAlberta- beefChina-jeansSpringridge farm-strawberriesWaterloo –RIM-blackberryPEI-lobsterIndia-t shirt
75. How much productive land would all the people of Canada need. 6 5. How much productive land would all the people of Canada need? 6.4 (EF)x (Canada’s population).hectares of land.
86.Does Canada have enough productive land to support our current population? Canada has about hectares of productive land. Compare this number to your answer in question 6, and then determine the surplus of deficit of productive land.Productive land availableProductive land neededSurplus or deficit?surplus
97. What is Canada’s carry capacity 7. What is Canada’s carry capacity? Divide the total amount of productive land by 6.4 hectares. How many people can Canada support?/ 6.4 =(if the growth rate remained at 0.8%) according to rule of 70 and doubling time in 87 years according to the 2016 population prediction Canada’s population in 2103 would beCanada’s productive land could not support it’s population!
108. What other factors affect Canada’s carrying capacity? Exporting of resources – eg) energy, seafood, water. If we export our resources we are limiting our carrying capacity.
119. Looking at figure 39.6 and reading page 527, do dot jots to describe the carrying capacity of Earth.C capacity only increased slightly over last 2 centuries b/c found new uses for resources. Uranium for electricity.See increase in stress world pop. puts on earth b/c increased #’s pop. = increased consumption.Today world is in ecological overshoot causing global warming, loss of topsoil, shortage of fresh water, destruction of forests, loss of fish, depletion of ozone layer.World can operate in overshoot for a bit longer by using up it’s supply of non renewable resources, and then what?Carrying capacity will decrease, as non renewable resources are used up and pop. will drop when there are no more resources to support it.
1210. Read Living Today and Planning for Tomorrow 10. Read Living Today and Planning for Tomorrow. What are the environmental challenges that the world community faces?Lack of fresh water by 2025.Extinction of 60% of Can. Wildlife due to construction of mining, forestry roads and homes.Depletion of non renewable nrg resources.Global warming caused changes to coral reefs, polar regions, forests, weather and agriculture.ecological overshoot.
1311. What 4 principles is UNESCO’s Decade of Education for Sustainable Development based on? 1. Respect and care for community living2. Ecological integrity3. Social and economic justice4. Democracy, non violence and peace.
1412. How can you contribute to meeting these goals?