human responsibility
TRANSCRIPT
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Learning Goals:
• To understand the interactions between the 4 spheres
• To understand human responsibility for the planet
ARE WE RESPONSIBLE FOR THE EARTH?
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Humans have developed the ability to drastically affect, or even completely destroy, the Earth.
Therefore, we (humans) have a responsibility to the Earth to keep it intact.
Taking care of the Earth is not just a responsibility -- it's a privilege
ARE WE RESPONSIBLE FOR THE EARTH?
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• Increase in the human population• Deforestation – the removal of trees to
make way for agricultural land resulting in a reduction of carbon sinks. • The process of deforestation itself causes
high levels of carbon dioxide to be produced as the trees are burnt• Increase in livestock (cows, sheep, pigs
etc) for human use causes an increase in the levels of methane gas being produced
HOW DO HUMANS IMPACT THE EARTH?
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• Agriculture• Timber harvest• Mining• Urbanization• Introduction of exotic species• Harvesting of fish and wildlife• Fire suppression
HUMAN INTERACTIONS
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Tree removed and replace with pasture (for animals) or crops
AGRICULTURE
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Deforestation removes trees and replacement over time
FORESTRY
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Open cast mining removes much vegetation
Underground mining affects water tables
Underground gold mine in Wales UK
MINING
Open Cast mine in Virginia USA
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Removes trees and replaces natural landscape with concrete
Lake Union
Samish Lake
URBANISATION
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• Trying to develop more fuel efficient cars• Developing electric or hybrid cars• Governments and businesses are
investing in wind power• Governments investing in solar
power for heating water and generating electricity• Planting trees• Recycling programs
WHAT IS AUSTRALIA DOING?
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• Conserve water by using less and also installing water tanks to collect rainwater• Conserve power by installing solar panels,
turning off unused appliances and buying more energy efficient products• Buy more energy efficient vehicles, use
cars less and public transport more, car-pooling• Replacing incandescent light bulbs with
compact fluorescent light (CFL) bulbs
WHAT CAN I BE DOING?
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