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Transcript of Global Warming
Water Resource impact
*As global warming continues, more people will be diagnosed with asthma and heart disease because of the intense smog.
*According to the Canadian Medical Association, air pollution prematurely kills about 21,000 Canadians a year.
*There will be more disease carrying organisms (e.g. mosquitoes, rodents, bats, flies) because of rising average temperatures and increased habitat area.
Since 1979, the Arctic summer ice has declined 30%. Scientists have linked the melting to the build-up of greenhouse gases, caused by human activity. This ice melt has prevented polar bears from hunting and breeding which has resulted in population decreases . In 2008, polar bears were classified as an endangered species. As most of you know, polar bears are capable of swimming but, there is too much open water between ice sheets. In 2004, a total of 4 polar bears drowned off the coast of Alaska.
Climate changes are affecting the economic system of the world. Severe impacts are a possibility for countries that depend on natural resources, such as Canada.
Economies will see the impact in the disappearance of their natural resources such as trees, fresh water, and food.
Ontario's lakes and rivers both inland and 4 of the Great Lakes are expected to decline in water levels because of the warmer temperatures causing more moisture to evaporate and less ice cover. This could possibly lead to a larger frequency of droughts and floods.
Climate Change vs Global Warming
Although it is almost impossible to reverse all negative effects of Global Warming, I believe that step by step we can change our ways of life so that they don't harm the environment any further. We need to take responsibility for our harmful actions and stop passing it on to the next generation. We must make a change now! Otherwise, if we continuously harm the world before we know it, our world will be filled with disease and limited sources of water. For the sake of the future, oil companies must stop being selfish and release the technology to reduce fossil fuel usage. Between driving back and forth to my sisters schools and sports my family drives a ton. We help the environment by carpooling, to eliminate burning more fossil fuels.
The Greenhouse effect is a natural effect on Earth which is enhanced by human activities. When solar radiation from the sun reaches Earth’s atmosphere, some is reflected back into space, but most of this heat is absorbed by greenhouse gases in the atmosphere which warms up our planet. Humans increase the amount of heat absorbed by the Earth’s atmosphere because we create a lot of carbon dioxide (burning of fossil fuels) which helps contain the heat better, trapping it in the Earth’s atmosphere. The main greenhouse gases are carbon dioxide, methane,and nitrous oxide. All three of which are enhanced by human activities in high amounts. Carbon dioxide is the main contributor to climate change, especially through the burning of fossil fuels.
smog over lake Erie
Bird Migration Disruption
Impacts of Climate change
*Rising temperatures of the west coast of Canada causing economically valuable salmon species to weaken;
*Warm winters in B.C are causing invasive beetles to damage 181 000 square km of billion dollar forests.
Examples of Economic Impacts
Human Activities that contribute
to Global Warming
The largest contribution is the burning of fossil fuels, which releases carbon dioxide gas into the atmosphere. Most things that we use rely on electricity for power. A large percentage of electricity is produced by coal burning plants. Deforestation is also a major contributing factor. Trees feed off of carbon dioxide so by cutting down trees carbon dioxide is not being reduced.
Since the early twentieth century scientist have noticed glaciers around the world have been retreating significantly. Some believe glacial retreats slowly began during the industrial revolution in 1760 due to the increased amount of carbon dioxide being released into the atmosphere. It is predicted that 200 years from now most, if not all of the glaciers will have disappeared due to global warming. According to NASA, the polar ice cap has been melting at a rate of approximately 9% per decade since 1979. Due to the melting of glaciers, ocean levels have risen and 150 million people will have to move inland because of the increased amount of water in seas and oceans.
Relatively 925 bird species live in North America, 2/3 of these species migrate south for the long winter months.
Climate change causes regions with a high-latitude to have an increased temperature. Heat can aggravate health problems. Cardiovascular and respiratory diseases are becoming more severe because of the warm temperatures. Although global warming may bring some localized benefits such as fewer winter deaths in temperate climates and increased food production in certain areas, the overall health effects of a changing climate are likely to be overwhelmingly negative. Climate change affects social and environmental key factors of health such as clean air, safe drinking water, sufficient food and secure shelter.
Other Heath impact examples
-a contributing factor to climate change.
-Global warming is caused by the build-up of greenhouse gases in the atmosphere.
-It causes an increase on the earth's average temperatures.
-changes in long term weather patterns
-leads to changes in precipitation, rising sea levels, impacts plants, humans and wildlife
Why don't we change ?
We have the technology to eliminate relying on oil to run our world. There is just one big dilemma, the oil companies. Oil companies are purchasing all the new technology that would replace fossil fuels. Why would they do this? For power, when our world eventually runs out of oil they will release all of this technology and continue to have significant power.
Fact: Urban air pollution causes 1.2 million deaths every year worldwide!
As the earth’s temperature continues to rise, we can expect a significant impact on our fresh water supplies with the potential for devastating effects on these resources. As temperatures increase, evaporation increases, sometimes resulting in droughts.