Презентация на тему Global Warming

increase in the average temperature of Earth's near-surface air

and oceans since the middle of the20th century and it’s projected continuation. According to the 2007 Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), global surface temperature increased 0.74 ± 0.18 °C during the 20th century.

temperature increase has been caused by increasing concentrations of

greenhouse gases, which result from human activity such as
the burning of fossil fuel
deforestation.

in absorbing IR light and they protect from superheating

the Earth’s surface
The most important greenhouse gases are:
H2O – Water vapor.
CO2 – Carbon Dioxide
CH4 – methane
The process by which absorption and emission of infrared radiation by gases in the atmosphere warm a planet's lower atmosphere and surface is called the greenhouse effect

the ice caps. This melting could increase the oceans

height by up to 2 feet in only one century! This would mean many heavily populated cities would flood causing millions maybe billions of dollars of damage and the potential loss of life in these cities.
2. natural disasters would increase which influence spreading of diseases more rapidly, and animals have been found migrating towards the poles due to the increase in heat.
3. Deaths from global warming will double in just 25 years, to 300,000 people a year.
4. Heat waves will be more frequent and intense
5. Droughts and wildfires will occur more often
6. More than a million species could be driven to extinction by 2050.

products
supporting local business’ carpool
planting more trees we can help

our planet.
None of these are overnight solutions but if we all work to do some of these things we can drastically help our planet.

views vary but the two main ideas are that

either this warming is part of Earth’s natural cycle (the Earth has been warming and cooling ever since its beginning) - Earth’s Natural Cycle Theory
Or that this is all an effect from solar activity and the temperature of the Earth –Sun Theory

energy in Earth's climate, the sun certainly has a

strong influence on climate change. Consequently there have been many studies examining the link between solar variations and global temperatures.

that there has been human interference but nothing to

the extent of what the alarmist fear. This theory also states that the Earth has warmed and cooled before as well as had rises in the levels of CO2 and has always got through it.

warming is just another way for scientists to get

significant funding for their experiments.
By making global warming out to be a apocalyptic disaster of sorts the government has been throwing money at scientists to find a solution to this problem and learn more about it.

or continue to be indifferent and passive?