Essay on Causes of Global Warming

The term global warming is used to refer to the rise in earth’s average surface temperature, due to human activities. Global warming is directly related to a natural phenomenon called the greenhouse effect which is caused by greenhouse gases. In the essays, we will deal with the causes of the greenhouse effect.

Short and Long Essay on Causes of Global Warming

Essay 1 (250 Words) - Primary Cause of Global Warming

Introduction

Global warming refers to the rise in the average surface temperature of the earth. Earth maintains an average temperature with the help of its naturally occurring atmospheric cover. But for some reason, mainly human-induced, this temperature is constantly rising and this phenomenon is called global warming.

Primary Cause of Global Warming

The first and most significant cause of global warming is the greenhouse effect. Earth has a natural concentration of gases like CO2 (carbon dioxide), CO (carbon monoxide), SO2 (sulfur dioxide), N2O (nitrous oxide) among others. These gases prevent the sun’s heat reflected from the earth’s surface from escaping back in the atmosphere. This process thereby maintains a constant average temperature on earth, which is conducive to life on the planet. The process is called the greenhouse effect and the gases are referred to as greenhouse gases.

Many human activities also produce the mentioned greenhouse gases, which ultimately increases their atmospheric concentration. More greenhouse gases will prevent more heat from escaping, thereby augmenting the temperature of the earth. Moreover, continuous human activities make sure that more greenhouse gases are constantly released into the atmosphere, thereby constantly increasing the greenhouse effect. This continuous rise in the greenhouse effect is causing temperature rise on earth, which is not conducive to the planet’s ecology.

Conclusion

If the temperature rise on the earth is allowed to continue at the present rate, then its effects will soon be felt and they will be anything but desirable. Extreme climatic conditions, floods, and draughts are only a few of the repercussions of global warming.

Essay 2 (400 Words) - What Causes Global Warming

Introduction

The main causes of global warming are anthropogenic, that is they are induced by human activities. Human activities generate greenhouse gases resulting in greenhouse effect and global warming. The relationship between the three – greenhouse gases, greenhouse effects, and global warming is that of direct proportionality.

Various Causes of Global Warming

Several causes of global warming are as described below. It must be kept in mind that all the significant causes of global warming are caused due to human activities only.

  • Transportation

The transport industry is a globally thriving industry. Every day millions of transport vehicles of all shapes, sizes, and capacities, hit the road. Also every day millions of new vehicles are added to the fleet of existing vehicles. These include small personal transport to big airliners. Fuel used by the vehicles produces gases like Carbon dioxide (CO2) and carbon monoxide (CO), nitrogen oxide (N2O), sulfur dioxide (SO2) and others. These gases are produced in the combustion process in the vehicle’s engine and are potent greenhouse gases. Therefore, an increase in the greenhouse gases’ concentration by transport vehicles, result in global warming.

  • Landfills

Landfills are large dumps of waste disposed over a large area, usually outside a city. They are the products of a soggy waste management system and government’s lethargy. They constitute of all kind of solid. Semi-solid and liquid garbage, including plastic, wood, plants, etc. When left to degrade in open, landfills are a good source of methane (CH4), which is a greenhouse gas. Therefore, landfills too contribute to global warming by releasing a large amount of methane (CH4) into the atmosphere.

  • Factories

Factories involve many chemical processes that result in the generation of gases like Carbon dioxide (CO2), carbon monoxide (CO), Nitrous Oxide (N2O) and sulfur dioxide (S2O) among others. The fossil fuel production industry is also a good source of greenhouse gases. In absence of a regulatory mechanism all these gaseous byproducts are released into the atmosphere directly, thereby resulting in global warming.

  • Mining Activities

The mining industry today stands as the backbone of human civilizations. It provides raw materials and other necessary minerals for useful everyday products. Many industries depend on mining for the supply of their raw materials. The mining industry, right from the extraction of minerals to their transportation, produces greenhouse gases, thereby contributing to global warming.

Conclusion

The world power must take note of the situation and chart out an effective plan to reduce the generation of greenhouse gases, produced due to various human activities.

Essay on Causes of Global Warming

Essay 3 (600 Words) - Global Warming and Its Causes

Introduction

“Global Warming” today is the most talked about topic around the world. It impacts the ecology and threatens the very existence of life on earth in several ways. In the essay, we will go through the causes of global warming in detail.

What is Global Warming?

Global warming refers to a persistent rise in the average temperature of the earth. Earth maintains an average surface and atmospheric temperature, feasible for the living creatures. But due to some reasons, this temperature is gradually on the rise, though, slow. But the climb is persistent.

The rise in temperature has been around 0.8°C or 1.4°F since the last century. In fact, every past decade had been warmer than the one before it.

The main cause of global warming has been linked to a natural phenomenon called ‘greenhouse effect’. The greenhouse effect is caused by greenhouse gases naturally present in the atmosphere; however, some human activities also give rise to greenhouse gases, thereby intensifying the greenhouse effect. Global warming and the greenhouse effect is directly proportional to each other that is, as the greenhouse effect increases, global warming will also increase.

The greenhouse effect can be understood as a blanket effect over the surface of the earth that prevents the surface heat from escaping into the atmosphere, thereby increasing the surface temperature. The more greenhouse gases in the atmosphere, the more will be the greenhouse effect and hence global warming.

What Causes Global Warming?

There are several human generated causes of global warming. Mainly the human activities resulting in the generation of greenhouse gases are responsible for global warming. Listed below are some of the main causes of global warming.

  • Fossil Fuels

The extensive use of fossil fuel is the foremost cause of global warming. Today fossil fuel industry is a thriving industry, including its production and consumption. Petrol and diesel used in transport is also a fossil fuel. Burning of fossil fuel generates gases like Carbon monoxide (CO), Carbon dioxide (CO2) and nitrous oxides. These are potent greenhouse gases that increase the greenhouse effect, thereby raising the temperature of the earth.

  • Deforestation

Cutting down trees almost incessantly and exploitation of forests is also a great contributor to global warming. Trees act as natural coolants and also absorb carbon dioxide (CO2) and emit oxygen. Cutting down forests mean there would be fewer trees to absorb CO2 and hence its atmospheric quantity will increase. Since CO2 is a greenhouse gas, an increase in its atmospheric concentration means that there would be more greenhouse effect, ultimately causing a rise in the earth’s temperature. This rise in the earth’s temperature is nothing but global warming.

  • Farm Activities

Farming is the most common profession globally. Millions from across the world are completely dependent on farming and agricultural activities for their livelihood. Cattle are also used intensively throughout the world for products like milk, hide, and other purposes. Chemical fertilizers and pesticides used in agricultural activities release nitrous oxides upon decomposition, which is a potent greenhouse gas. Also, cattle are a source of methane (CH4) which is produced in their digestive tract. Methane is also a greenhouse gas and contributes to the greenhouse effect and global warming.

Conclusion

Global warming is a serious environmental concern that threatens the very existence of life on the planet. If the temperature is allowed to rise at the current rate then, in the next 100 years or so, the temperature would be unbearably hot for many land and water species. To control global warming we need to first control our own activities and reduce our carbon footprint on the planet.

FAQs: Frequently Asked Questions

Q.1 How Global Warming is caused?

Ans. Global Warming is caused when the concentration of greenhouse gases increases (specially from electricity and heat production sector) in the atmosphere.

Q.2 What is the most noticeable evidence of global warming?

Ans. The rapid melting of glacial ice and climate change is the most visible evidence of global warming.

Q.3 Which country in the world emits maximum greenhouse gases?

Ans. China is the country in the world that emits the maximum greenhouse gases.

Q.4 What is the rank of India as a contributor of carbon dioxide in the world?

Ans. India is in the fourth rank for emitting the highest amount of carbon dioxide in the world.

Q.5 Which gas is responsible for depleting the ozone layer?

Ans. Chlorofluorocarbons (CFCs) is responsible for depleting the ozone layer of the earth.