Composition: “Global Warming”

Composition: “Global Warming”

Global warming means gradual increase in the world’s temperature caused by green house gases. The main green house gas is carbon dioxide and others include nitrous oxide, chlorofluorocarbon (CFC), methane etc.Now a days global warming has made the environmentalists think about the dreadful consequences. It has become a threat to all living beings on earth. Global warming is due to greenhouse effect. It is the gradual warming of the air because of heat being trapped on earth.

There are many causes of the global warming, some are natural causes and some are human made causes. The most important cause of global warming is greenhouse gases which are generated by some natural processes as well as human activities. The increase in the level of green house gases has been seen in the 20th century because of the increasing population, economy and use of energy. Increasing demand of industrialization in the modern world to fulfill almost each need is causing the release of variety of green house gases through many industrial processes in the atmosphere.

Rise in the carbon dioxide level is the use fossil fuels like coal and oil, deforestation (cut down of plants) by the human beings on Earth. Decreasing number of the plants on the earth increases the level of carbon dioxide, as plants are the main source of the using carbon dioxide released by the human being (as a by-product of respiration) and other means. Increasing level of Earth’s temperature creates lots of problems like sea level becomes hotter and higher, glaciers melt, flood, strong storms, lack of food, diseases, death, etc.

Another cause of global warming is ozone depletion means declination of ozone layer over Antarctica. Ozone layer is declining day by day by increasing release of chlorofluorocarbon gas. It is a human generated cause of global warming. Chlorofluorocarbon gas is used at many places as aerosol propellants in the industrial cleaning fluids and in the refrigerators, the gradual release of which causes declination to the ozone layer in the atmosphere.

Presence of various aerosols in the atmosphere is also causing earth’s surface temperature to increase. Atmospheric aerosols are fully capable to scatter (causes cooling to the planet) and absorb (makes air warm) the solar and infrared radiations. They are also capable to change the microphysical and chemical properties of the clouds and possibly their lifetime and extent. The increasing amount of aerosols in the atmosphere is because of human contribution. Dust is produced by agriculture, organic droplets and soot particles are produced by biomass burning, and aerosols are produced by the industrial processes through the burning of wide variety of products in the manufacturing process. Various emissions by means of transport generate different pollutants which get converted to the aerosols through many chemical reactions in the atmosphere.

One of the most obvious effects of global warming is extreme weather. The weather patterns are rapidly changing in all parts of the world. The increased rainfall in certain regions affects the balance that animals and plants need to survive. Climate changes cause health problems, animal migration, and the lack of food resources. Extreme heat and droughts in diverse regions of our planet have become disastrous to human health. The frequency of the heavy precipitation has lead to the greater prevalence of floods. Global warming creates more natural disasters. Extreme weather events will continue to occur with greater intensity. So, we will experience significant changes in seasonal temperatures variations, wind patterns, and annual precipitation.

The effects of climate change due to the global warming can be devastating to the human society. People can face severe crop failures and livestock shortages that will cause civic unrest, food riots, famines, and political instability in the whole world. Global warming threatens our future health conditions. Humanity will experience an increase in tick-borne and mosquito-borne diseases. What is more, people have become more vulnerable to extreme weather and climate changes that lead to serious mental health issues.

However, to protect the country as well as the world from the adverse effects of climate change, some policies can be taken such as green the community, be energy efficient, choose renewable power, eat wisely, trim wastage, fly less, let polluters pay, support and donate. Apart from, by deeply digging canals and rivers, by planting trees, by reducing fuel use, the degree of the negative impact of climate change can be reduced. In addition, everyone should be very sincere to this terrible issue and the government should be very much careful to take effective policies to combat with this challenge.