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Global Warming

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by

Ashley Clarke

on 11 February 2014

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Transcript of Global Warming

Global Warming
By: Ashley , Josiah & Sherry
What is Global Warming
Global Warming
is a gradual increase in the overall temperature of the earth's atmosphere. This is generally attributed to the greenhouse effect, and is caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
What causes Global Warming
climate change
is primarily caused by the growing amount of heat-trapping gases in the atmosphere, often referred to as “greenhouse gases." ( carbon dioxide, methane etc. ) This is a result from human activities, such as deforestation, pollution, and burning fossil fuels.
Who / what does it affect?
There are:
Health Impacts
Economic Impacts
Forest Impacts
Water Impacts
Species and Ecosystems Impacts
Future of Global Warming
Greenhouse gas concentrations in the atmosphere will continue to increase unless the billions of tons of our annual emissions decrease. Increased concentrations are expected to:


Increase Earth's average temperature
•Influence the patterns and amounts of precipitation
•Reduce ice and snow cover, as well as permafrost
•Raise sea level
•Increase the acidity of the oceans

These changes will impact our food supply, water resources, infrastructure, ecosystems, and even our own health .

What can we do?
1. Reduce, Reuse, Recycle
2. Use Less Heat and Air Conditioning
3. Change a Light Bulb
4. Drive Less and Drive Smart
5. Buy Energy-Efficient Products
6. Use Less Hot Water
7. Use the "Off" Switch
8. Plant a Tree
9. Encourage Others to Conserve
10.Educate the public
In general, global warming effects all aspects of life all around the world
Health Impacts
Deadly heat
Climate change will cause high-latitude regions, like Canada, to warm drastically. With tropical heat comes tropical illnesses, and large increases in heat-related deaths.

- A hotter world is a sicker world
Rising average temperatures will likely extend the ranges of disease-carrying organisms like mosquitoes, rodents and bats

Air pollution
According to the Canadian Medical Association, air pollution prematurely kills about 21,000 Canadians a year. This will continue to rise with the increased effects of climate change

- Toxic brew
Air pollution from burning fossil fuels produces many other compounds that hurt our health: carbon monoxide, nitrogen oxide, sulphur dioxide, volatile organic compounds and small airborne particulates. They can cause impaired lung function, shortness of breath, wheezing, asthma attacks and premature death.
Economic Impacts
Rising ocean temperatures on Canada's West Coast have weakened economically valuable salmon species, reducing the survival rates of spawning fish

Forests in British Columbia have been devastated recently by the mountain pine beetle, which thrives thanks to unusually mild winters. The value of these trees are billions of dollars

The mining industry in Canada is also vulnerable to climate change, including from reduced water levels.
Forest Impacts
Forest dispersion and shifting
decreased soil moisture will cause more drought-resistant trees or grasslands to displace existing forest ecosystems.

Forest fires
As hotter, drier summers increase evaporation they will also increase the risk of forest fires across most of Canada, and increase the severity.

Forest disease and pest infestations
Warmer temperatures are also expected to expand the ranges and enhance the survival rates of forest pests such as the spruce budworm and the mountain pine beetle
Summarizing video by
National Geographic
Full transcript