Environmental Geography

The temperature raises fast as an unusual rate (1.2 to 1.4 degree)
Global warming is caused by human activity (not climate change)
Past: people use oil, gas and coal produce energy to keep house warm (dirty but cheap)
they are fossil fuel
not renewable, smoke creates pollution and causes green house effect (carbon dioxide)
carbon dioxide doesn't let so much heat escape from the atmosphere
Now: people use gas, oil, and electricity to keep warm
water, solar energy are renewable energy, they don't leave pollution
China had many coal factories in last 20 years which made much air pollution, sometimes people need to wear masks when they go out
The size of polar ice caps reduced by 10% in last 30 years, then they broke off and fell into the water
earth temperature has raised to 10 degree, it is 5 degree warmer than usually is
drought is more common in more area now
green house gas: 82% carbon dioxide, 10% methane, 5% nitrous oxide, 3% fluorinated gases
ocean contains 50% earth oxygen, and more than one billion people rely on ocean (protein)
30% increase → ocean level and getting warm
building is closer to ocean 3 feet (damage)
glacier lose 4 hundred billion ton every year (400,000,000,000)
climate change: a long term change n the Earth's overall temperature with massive and permanent ramifications