essay on topic climate change?? (500 words)
Answers
Explanation:
It is a change in the condition of weather around the world.
2) It can sustain for an extended period, maybe a decade or millions of years.
3) It is due to a certain variation in solar radiation absorbed by the earth, volcanic eruptions etc.
4) Certain human activities are also responsible for climate change such as “Global Warming”.
5) Overall temperature increases of the earth due to “Greenhouse Effect” caused by carbon-di-oxide, CFCs and other pollutants; known as Green House Gases.
6) Climate forcing factors, which can change the climate, can be either internal or external.
7) Internal mechanisms are the natural processes inside that climate system like volcanic eruptions.
8) External mechanisms are the involvement of human beings like the emission of greenhouse gases, pollution.
9) In the 20th century, most of the years until now have been very warm compared to the years of the 19th century.
10) The glaciers in Antarctica are melting rapidly since the year 2002
CLIMATE
Climate change refers to the change in the environmental conditions of the earth. This happens due to many internal and external factors. The climatic change has become a global concern over the last few decades. Besides, these climatic changes affect life on the earth in various ways. These climatic changes are having various impacts on the ecosystem and ecology. Due to these changes, a number of species of plants and animals have gone extinct.
When Did it Start?
The climate started changing a long time ago due to human activities but we came to know about it in the last century. During the last century, we started noticing the climatic change and its effect on human life. We started researching on climate change and came to know that the earth temperature is rising due to a phenomenon called the greenhouse effect. The warming up of earth surface causes many ozone depletion, affect our agriculture, water supply, transportation, and several other problems.
Reason Of Climate Change
Although there are hundreds of reason for the climatic change we are only going to discuss the natural and manmade (human) reasons.
Natural Reasons
These include volcanic eruption, solar radiation, tectonic plate movement, orbital variations. Due to these activities, the geographical condition of an area become quite harmful for life to survive. Also, these activities raise the temperature of the earth to a great extent causing an imbalance in nature.
Human Reasons
Man due to his need and greed has done many activities that not only harm the environment but himself too. Many plant and animal species go extinct due to human activity. Human activities that harm the climate include deforestation, using fossil fuel, industrial waste, a different type of pollution and many more. All these things damage the climate and ecosystem very badly. And many species of animals and birds got extinct or on a verge of extinction due to hunting.
Effects Of Climatic Change
These climatic changes have a negative impact on the environment. The ocean level is rising, glaciers are melting, CO2 in the air is increasing, forest and wildlife are declining, and water life is also getting disturbed due to climatic changes. Apart from that, it is calculated that if this change keeps on going then many species of plants and animals will get extinct. And there will be a heavy loss to the environment.
What will be Future?
If we do not do anything and things continue to go on like right now then a day in future will come when humans will become extinct from the surface of the earth. But instead of neglecting these problems we start acting on then we can save the earth and our future.
Although humans mistake has caused great damage to the climate and ecosystem. But, it is not late to start again and try to undo what we have done until now to damage the environment. And if every human start contributing to the environment then we can be sure of our existence in the future.