Climate change refers to long-term changes in climate, including average temperature and rainfall.
Global warming is the increase in the average temperature of Earth's near-surface air.
Green house gases Greenhouse gases absorb and
hold heat in the atmosphere.
burning fossil fuels, such as coal, oil or gas
the increasing demands on electricity
clearing land, including logging
the breakdown of food and plant wastes and sewerage
some industrial processes, such as making cement and aluminum.
some aspects of farming, such as raising cattle and sheep, using fertilizers and growing some crops
why is the Climate changing?
Since the Industrial Revolution in the 1700’s, activities, such as the burning of oil, coal and gas, and deforestation, have increased CO2 concentrations in the atmosphere. In 2005, global atmospheric concentrations of CO2 were 35% higher than they were before the Industrial Revolution.
CO2 level after industrial revolution Scientists at the Mauna Loa observatory in Hawaii say that CO2 levels in the atmosphere now stand at 387 parts per million (ppm), up almost 40% since the industrial revolution and the highest for at least the last 650,000 years.
Impact of burning fossil fuel
The melting of glaciers can cause floods Rivers will dry up, causing drought More intense rainfall on rainy day and more dry days in a year
Rise of sea level
People living in islands will lose their homes The ecosystem will be wiped out
Decrease the pH value Some animal will extinct
Impact of burning fossil fuel
When people burn fuel, the sulfur is oxidized, and turns into sulfur dioxide (SO2) gas. And cars exhausts give off nitrogen oxides, making our rain acidic. It can seriously affect the farming industry. And acid rain can also destroy the structures of buildings.
In the society people become more and more materialistic and like to have a extravagant life By many plastic bottles and plastic bags (Plastic is by product of fossil fuel and CO2 emissions during their lifetime ) Use car for travel CO2 emissions In economic, the business men decide to make more plastic bags and bottles because many people need them. For the environment, Deteriorate green house effect Make the plastic business prosperous
Volcanic eruptions that release massive amounts of sulfur dioxide (SO2) into the atmosphere Trees remove CO2 through photosynthesis Green house effect solution add iron to the upper layers of the ocean place trillions of small transparent sheets in orbit to reduce the sunlight reaching the Earths surface by 2 percent (sufficient to offset warming even with a doubling of CO2)
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