| Unit 4: Humans and Environment |
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| Ecological Footprints - measures our impact on the environment - measured as the number of hectares required to support your lifestyle - people who live in harmony with the environment leave a small footprint - a footprint of 1.8 is required for a healthy lifestyle - lower footprints in areas where there is poverty, lack of food/shelter... |
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| Natural Resources - Non renewable- resources that can not be repalced after they have been used, eg. oil, nickel, gold - Renewable- resources that can be replaced after they are used, eg. crops, trees, fish - Flow Resources- are replaced naturally whether they are used or not, eg. wind, solar, streams |
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| Fishing - East coast fishery was shut down in 1992 due to decline in numbers. - Reasons for decline: 1. Overfishing 2. Improved fishing technology 3. Uncontrolled foreign fishing 4. Desctuctive Fishing practices 5. Changes in natural Concitions (climate) Conflicts along Canada's coasts (US border, and Fance islands) Homework: Page 57#1,2,4,5; Page 59#4; Page 190#1,3,5 |
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| Forestry - Commercial vs Non-Commercial Forests - Softwoods and Hardwoods - Threats to the Forest: 1. Logging (shelterwood, clear-cutting, selective cutting) - selective cutting is much less disruptive 2. Environmental Hazards (acid rain, insect pests&disease) 3. Forest Fires are a natural part of the forest cycle Homework: Worksheet |
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| Conventional Energy - Canada has high energy consumption-->Distances between cities; colder climate; and high living standards - 3 Conventional Sources of Energy: Definition, Benefits and Concerns 1. Flowing Water 2. Fossil Fuels 3. Uranium Homework: Worksheet |
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| Alternative Energy - Are renewable energies that are replaced naturally by the environment (solar and wind) - Examples are: Wind, Solar, Geothermal, Biomass, Tidal and Hydrogen - Alternative energies although "environmentally friendly" also have concerns: aesthetics, habitat hazards, land use, availability, location Homework: Worksheet: Benefits and Concerns of the 6 AE's |
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| Energy Sustainability and Mega Projects - Has high prices had an effect on energy use? - 75% of Canada's energy from fossil fuels--->What may happen (think of the type)? - Mega Project Locations: Alberta Tar Sands, Hibernia Oil Fields, James Bay Project, Labrador/Churchill Falls Homework: Worksheet |
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| Air Pollution and Acid Rain - 3 majjor air pollutants are: carbon monoxide, nitrogen oxides, and sulphur dioxide - Thermal inversion limits the upward movement of pollution because the cooler air can't rise above the warmer air Homework: Acid Rain Worksheet |
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| Water Resources and Pollution - Importance of wetlands and lakes - Water pollution issues (bacteria, eutrophication, thermal pollution) - Solutions: distillation, towing iceburgs Homework: Water pollution worksheet, Lake Erie Case Study |