Essay on Global Warming | Essays for Class 7 PDF Download

What is Global Warming?

The greenhouse effect is a natural phenomenon of the earth, and it is crucial for life. If not for the greenhouse effect, the earth would freeze, and the temperatures would be far too cold to support life. However, human activities have accelerated the greenhouse effect to the point where the planet traps more heat than it lets out. This process is termed as global warming.

Implications of Global Warming

The average global temperatures rise, eventually disrupting the balance of nature. At first, the polar ice caps melt, leading to an increase in sea levels. This can cause many animals that live in the poles to lose their natural habitat.

Gradually, the average global temperatures also rise, causing global climatic changes. Storms and droughts increase in their intensity; flooding, famine and other natural calamities increase in their frequency. Eventually, it can change the natural landscape as well as the socio-political landscape. Scientists have even predicted that climate change brought about by global warming can introduce many new and virulent diseases.

Consequences of Global Warming

Venus is the hottest planet in the solar system, though it is not the closest. This is due to the thick carbon-dioxide rich atmosphere of Venus. However, scientists speculate that millions of years ago, carbon dioxide levels were similar to earth, but a phenomenon called the Runaway- Greenhouse effect changed the planet drastically.

This phenomenon occurs when the greenhouse effect reaches a crucial tipping point, where the heat trapped does not escape, causing the temperatures to rise uncontrollably. It can rise to the point where oceans would start to evaporate and the rock sublimate, releasing even more water vapour and carbon dioxide into the atmosphere.

Conclusion

Though such an apocalyptic scenario may not occur on earth, the effects of global warming are still apparent. Humans have to reduce their carbon footprint and change for the better, else risk causing planet-wide disruptions.