The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. The infrared radiation passes through the atmosphere from the sun but most is reemitted in all directions by greenhouse gas molecules and the sun.
Global warming could lead to lower deaths from the cold and it would be nice in the warm winters.
Leads to destruction of habitats and would kill animals. Would also create more forest fires as they are so dry.
Evidence of Sea Level Rises
Tide gauge readings, and satellite measurements tell us that over the past century, the Global Sea Level has risen by 4 to 8 inches (10 to 20 centimeters). However, the annual rate of rise over the past 20 years has been 0.13 inches (3.2 millimeters) a year, roughly twice the average speed of the preceding 80 years.
Why are Sea Levels rising?
The rise in sea levels is linked to three primary factors, all induced by this ongoing global climate change: Thermal expansion: When water heats up, it expands. Melting of glaciers and polar ice caps: Large ice formations, like glaciers and the polar ice caps, naturally melt back a bit each summer. But in the winter, snows, made primarily from evaporated seawater, are generally sufficient to balance out the melting. Ice loss from Greenland and West Antarctica: As with glaciers and the ice caps, increased heat is causing the massive ice sheets that cover Greenland and Antarctica to melt at an accelerated pace.
This shows that as the temperature rises the sea level rises over the last hundred years mainly due to the industrial revolution
Benefits
Frozen regions of the world such as Siberia and northern Canada may be able to grow crops in a milder climate.
Canada’s North-West Passage may become ice-free and can be used by shipping
This graph shows that carbon dioxide is the main greenhouse gas
Canada’s North-West Passage may become ice-free and can be used by shipping
Some species, whose habitat changes, may become extinct – there is considerable concern about polar bears in the Arctic
Global warming could lead to lower deaths from the cold and it would be nice in the warm winters.
Leads to destruction of habitats and would kill animals. Would also create more forest fires as they are so dry.
Longer growing season in rich agricultural areas such as Europe and North America will increase food production
An additional 220-240 million people may be at risk from malaria particularly in China and central Asia. Tropical diseases in Africa likely to spread to North of continent
