Global warming becomes a big issue in today’s media.
What is Global Warming? Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades and its projected continuation. The prevailing scientific opinion on climate change is that "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations," which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect.
Greenhouse gases are released by activities such as the burning of fossil fuels, land clearing, and agriculture. Other phenomena such as solar variation and volcanoes have had smaller and probably negative effects 1950. There are lots of myths about the global warming like? It is undisputed that humans are entirely responsible for the increase in atmospheric CO2 over the past few centuries. In pre-industrial times, large natural sources of CO2 were balanced by equally large natural removal processes, such as photosynthesis in plants, maintaining a stable level of CO2 in the atmosphere for thousands of years. Human-produced emissions, though smaller than natural emissions, upset this balance. Because human-produced emissions aren’t completely absorbed by natural processes, they accumulate in the atmosphere, increasing the concentration of CO2.
There are natural sources of greenhouse gases. At times during the earth's history, natural emissions of greenhouse gases have been critical factors in major biological calamities on the planet. For instance, during the "Permian extinction" 250 million years ago, volcanic greenhouse gases played a primary role in the catastrophic climate change that caused about 80% of the life on earth to die off. At other times, naturally released greenhouse gases have also played a role.
What is Global Warming? Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades and its projected continuation. The prevailing scientific opinion on climate change is that "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations," which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect.
Greenhouse gases are released by activities such as the burning of fossil fuels, land clearing, and agriculture. Other phenomena such as solar variation and volcanoes have had smaller and probably negative effects 1950. There are lots of myths about the global warming like? It is undisputed that humans are entirely responsible for the increase in atmospheric CO2 over the past few centuries. In pre-industrial times, large natural sources of CO2 were balanced by equally large natural removal processes, such as photosynthesis in plants, maintaining a stable level of CO2 in the atmosphere for thousands of years. Human-produced emissions, though smaller than natural emissions, upset this balance. Because human-produced emissions aren’t completely absorbed by natural processes, they accumulate in the atmosphere, increasing the concentration of CO2.
There are natural sources of greenhouse gases. At times during the earth's history, natural emissions of greenhouse gases have been critical factors in major biological calamities on the planet. For instance, during the "Permian extinction" 250 million years ago, volcanic greenhouse gases played a primary role in the catastrophic climate change that caused about 80% of the life on earth to die off. At other times, naturally released greenhouse gases have also played a role.
No comments:
Post a Comment