WHAT IS GREENHOUSE EFFECT ?
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The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. ... The absorbed energy warms the atmosphere and the surface of the Earth.
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere.
Popularly Greenhouses are glass buildings in which plants are grown that need protection from cold weather. Greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, ozone and artificial Chemicals like Chlorofluorocarbons (CFCs). When the Sun´s energy reaches the Earth´s atmosphere, some of it gets reflected back to space and the rest is absorbed and re-radiated by greenhouse gase. The absorbed energy warms the atmosphere and the Surface of the Earth. This process maintains the Earth´s temperature at around 33 degrees Celsius warmer than it would otherwise be, permitting Life to exist on Earth. This natural process that warms the Earth’s Surface is called egreenhouse effect.
Enhanced greenhouse effect due to human activities especially burning fossil fuels like coal and natural gases, agriculture and land clearingis is contributing to warming of the Earth global . Increases in the different greenhouse gases have other effects apart from global warming including ocean acidification, smog pollution, ozone depletion as well as changes to plant growth and nutrition levels. Greenhouse gas levels have been increasing since the start of the Industrial Revolution, but over the last few decades growth has been particularly fast.
Global warming is harming the environment in several ways including:
1. Desertification
2. Increased melting of snow and ice
3. Sea level rise
4. Stronger storms and extreme events
5. Ocean acidification
6. Changes to plant growth and nutrition levels
7. Smog and ozone pollution
8. Depletion in ozone layer.