Question

Both the developed and developing countries are releasing greenhouse gases into the atmosphere .as a result many disasters are occuring. What are those disasters.

Answer 1

The greenhouse effect happens when certain gases—known as greenhouse gases—collect in Earth’s atmosphere. These gases include carbon dioxide (CO2), methane, nitrous oxide (N2O), fluorinated gases, and ozone. Greenhouse gases let the sun’s light shine onto the Earth’s surface, but they trap the heat that reflects back up into the atmosphere. In this way, they act like the glass walls of a greenhouse. This greenhouse effect keeps the Earth warm enough to sustain life. Scientists say that without the greenhouse effect, the average temperature of the Earth would drop from 14˚C (57˚F) to as low as –18˚C (–0.4˚F). Some greenhouse gases come from natural sources. Evaporation adds water vapor to the atmosphere. Animals and plants release carbon dioxide when they respire, or breathe. Methane is released naturally from some low-oxygen environments, such as swamps. Nitrous oxide is produced by certain processes in soil and water. Volcanoes—both on land and under the ocean—release greenhouse gases, so periods of high volcanic activity tend to be warmer. Since the Industrial Revolution of the late 1700s and early 1800s, people have been releasing large quantities of greenhouse gases into the atmosphere. That amount has skyrocketed in the past century. Greenhouse gas emissions increased 70 percent between 1970 and 2004. Emissions of CO2, the most important greenhouse gas, rose by about 80 percent during that time. The amount of CO2 in the atmosphere today far exceeds the natural range seen over the last 650,000 years. Most of the CO2 that people put into the atmosphere comes from burning fossil fuels. Cars, trucks, trains, and planes all burn fossil fuels. Many electric power plants do, as well. Another way humans release CO2 into the atmosphere is by cutting down forests, because trees contain large amounts of carbon. People add methane to the atmosphere through livestock farming, landfills, and fossil fuel production such as coal mining and natural gas processing. Nitrous oxide comes from agriculture and fossil fuel burning. Fluorinated gases include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and hydrofluorocarbons (HFCs). These gases are used in aerosol cans and refrigeration. All of these human activities add greenhouse gases to the atmosphere. As the level of these gases rises, so does the temperature of the Earth. The rise in Earth’s average temperature contributed to by human activity is known as global warming.

Answer 2

The disasters occurring due to the release of greenhouse gases are heat waves, forest and wildlife fires, tropical storms, drought, etc.

Explanation:

• The release of greenhouse gases like CO2, N2O, CFCs, Methane, etc. has led to global warming(a significant rise in the Earth's temperature) that may bring several disasters.
• Due to the rise in the temperature of the earth, there will be heavy rainfall in the coastal areas of the sea, due to which there will be chances of flooding. Drought conditions will occur in areas with average rainfall. The rise in temperature is a matter of great concern.
• If this continues further, it may also lead to a rise in temperature by 3.6 °C. As a result of this, it will cause severe floods, droughts, cyclones, and fires that may threaten the existence of human beings.
• For developing nations, there can be a decrease in the production of cereals, and various crops and fish production will also be affected. Melting of glaciers, rise in sea level, etc. are some other serious problems.

Learn more: Greenhouse gases

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