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We don't know exactly what levels of carbon dioxide (CO2) will limit global warming to a rise of 2 degrees Celsius, which is the maximum temperature rise recommended to avoid dangerous effects of climate change. The problem is that CO2 stays in the atmosphere for many hundreds of years. Levels now (2016) are over the 400 ppm (parts per million) or 0.04%, and this CO2 will keep absorbing heat. Even after 1000 years some of this carbon dioxide will still be in the atmosphere.
Scientists tell us that we must reach peak greenhouse gas emissions by 2020. That means that after 2020 our emissions should be reducing every year.
The United Nations Environment Program (UNEP)'s Emissions Gap Report in 2015 reports that global emissions in 2010 were 47.5 GtCO2e, and suggests that emission levels of 52 GtCO2e in 2020, 42 GtCO2e by 2030 and by 2050 close to 22,are consistent with a “likely” chance of limiting global warming to 2° C.
(GtCO2e means gigatons of CO2 equivalent, in other words, all greenhouse gases.)
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Why should you reduce the use of fossil fuel?
Because it produces CO and CO2. (greenhouse effect and global warming)
How could people cause global warming?
People cause global warming by deforestation, release waste gases (CO2) and pollution.
It is believed that excessive CO2 emissions will cause?
CO2 is carbon dioxide, and excessive CO2 is believed to cause Global Warming.
What environmental problem is caused by excess carbon dioxide in the atmosphere?
None that can be proven. While global warming effects an increase in atmospheric CO2, it is not correct to assume that an increase in CO2 will cause global warming; there are several other atmospheric gasses more warming than CO2, also on the rise.
The primary mechanism by which CO2 contributes to global warming is by?
The primary mechanism by which CO2 contributes to global warming is by preventing heat from escaping the atmosphere into space. As more and more heat is trapped in the atmosphere, temperatures increase.
What is global warming in the movie the inconvienient truth?
Global warming is mainly caused by CO2
Is CO2 destroying the ozone?
Carbon dioxide is denoted by CO2. It causes global warming. Global warming then causes ozone depletion.
How does the destruction of the Amazon affect global warming?
trees convert CO2 to O2. CO2 is the cause of the warming The less trees there are to convert CO2, the more CO2 there will be
Which gas is used as reference to calculate global warming potential?
Carbon Dioxide (CO2) is given a Global Warming Potential measure of 1.There are many green house gases that cause global warming but the gas used as reference to calculate global warming potential is carbon dioxide (Co2)
Why should we go against packaging?
We should go against packaging because if packaging is not biodegradable then we have to burn it which causes CO2. CO2 gasses cause global warming.
How are deforestation global warming and carbon dioxide connected?
Deforestation = less trees less trees = more CO2 and according to some people- more CO2 = Global warming
Why should you reduce the use of fossil fuel?
Because it produces CO and CO2. (greenhouse effect and global warming)
How could people cause global warming?
People cause global warming by deforestation, release waste gases (CO2) and pollution.
Why is co2 important to science?
Carbon dioxide contributes to global warming.
The gas predominantly responsible for global warming?
... Is carbon dioxide (CO2).
What are the effects of green houses on global warming?
They are a benefit in that they sequester CO2.
Which gas is the primary reason for global warming?
Carbon dioxide, CO2.
