Question

write speech on global warming

Answer 1

Good morning to my respected teachers and my dear friends. Now-a-days, every one of us is well aware of the threat of climate change. It is a serious issue increasing continuously because of the global warming. It is a big issue for our future generations to face all the challenges of this irreversible catastrophe changes in the environment. Global warming is the regular increase in atmospheric temperature of the earth. Earlier the rate of rise in temperature was slow however currently it is going at a faster rate. The main causes of the global warming are green house gases such as nitrous oxide, carbon dioxide, methane, etc. Such gases gets collected in the atmosphere and trap heat from all resources like sun and heat created by human activities (burning fossil fuels, petroleum, deforestation, etc). Global warming affects our planet atmosphere in many ways.

Because of increasing temperature in the environment, the arctic glaciers start melting and threatening the life of polar bears. Melting glaciers creates lots of water which increases sea levels in the low land areas of South Sea Islands. Increasing ocean temperatures creates problems to the life of plants and animals of water causes algae to die and disturbs entire food chain. In order to lessen the side effects of the global warming many laws have been made and implemented by the government of various countries such as limiting the harmful vehicle emissions, reducing emissions of chemicals causing damage to the ozone layer, reducing plant cutting, inducing tree planting, car pooling, etc.

Answer 2

Answer:

Respected Principal, teachers and my fellow students. This morning, I am going to speak on Global Warming, which is not only making life difficult but threatening the existence of life on Earth.

Global Warming

Global warming is the phenomenon of the increase in the temperature of the atmosphere due to the presence of excessive greenhouse gases emitted mostly by the burning of fossil fuels.

Effects of global warming:

Global warming will results in the melting of the polar ice caps and raise the ocean level which will submerge islands and coastal lands. Some of the fastest sinking cities are Tianjin in China, Semarang in Indonesia, Jakarta in Indonesia,

Shanghai in China, Ho Chi Minh City in Vietnam, Hanoi in Vietnam, Chittagong in Bangladesh, and Kobe in Japan.

Island nations which will be submerged first by the rising sea level are the Maldives, Solomon Islands, Samoa, Fiji Islands, etc.

Due to extreme climatic conditions, millions of people will be displaced. There will cause a serious refugee problem as people migrate to other countries looking for resettlement. Cities in the US New Orleans, Louisiana, Miami, and Florida are being affected by extreme weather conditions due to climate change.

Global warming would cause unpredictable rainfall. A sudden flash flood will be followed by a long period of drought. This will cause scarcity of drinking water and irrigation for cultivation leading to worldwide food scarcity.

The burning of fossil fuels increases global warming and also depletes the ozone layer which protects us from the harmful effects of UV rays of the Sun. This will increase the cases of skin cancer.

Global warming would cause unpredictable rainfall. A sudden flash flood will be followed by a period of a long drought. This will cause a scarcity of drinking water. The shortage of water for irrigation will lead to the failure of agriculture and cause worldwide food scarcity.

The increase of harmful greenhouse gases will also result in acid rain. The acid rain will kill marine life and corrode buildings and historical monuments.

Prevention of Global Warming:

The catastrophic consequences of Global Warming can be mitigated by preserving the natural ecological system, shifting to sustainable development, and using more environmentally friendly energy.

Planting more trees will reduce the amount of harmful carbon dioxide gas in the atmosphere and reduce global warming. We need to shift to alternative energy instead of burning fossil fuels like coal and petroleum products. The burning of fossil fuels increases global warming and also depletes the ozone layer which protects us from the harmful effects of UV rays of the Sun.

Industrial waste must be treated properly before they are dumped. Using renewable energy like hydroelectricity and solar energy will help us to reduce global warming. Urgent steps must be taken to reduce exhaust emissions from motor vehicles, power plants, factories, and industries. Global warming needs urgent global actions for the survival of life on earth, our home planet.

Thank you.

By: Selie Visa