Gimme a one-minute speech on global warming, please.
Answers
Explanation:
Global Warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die.
Many reasons may be there for the Global Warming, Primary and main cause is considered to be the Green House Effect. This effect is mainly caused by Carbon Dioxide, Methane, Chlorofluoro Carbon, Nitrous oxides etc gases. These gases form a cover in the atmosphere around the Earth through which hot rays of the Sun can enter to the Earth but cannot exit. So, the heat of the Sun remains in the lower circle of the Earth making the temperature rise.
It is feared that the world may experience rise in temperature of about 4° to 5°C by 2050. The average temperature of the Earth has risen by about 1°C in last five centuries and of this half of the warming is caused in Twentieth Century alone. The Global Warming is increasing at an alarming rate.
Global warming is affecting many parts of the world. Global warming makes the sea rise, and when the sea rises, the water covers many low land islands. This is a big problem for many of the plants, animals, and people on islands.
Due to the rise in average temperature of the Earth, agricultural crops, forests and life growth is affected adversely. It also changes balanced equations of marine life. Melting of glaciers will result in the rise of sea level posing a threat upon the habitat of coastal areas.
Because of these dangerous effects of ‘Global Warming’, at the international level measures are taken in the form of conferences, agreements and research.
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 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.
Global warming will results in the melting of the polar ice caps and raise the ocean level which will submerge islands and coastal lands. Island nations which will be submerged first by the rising sea level are the Maldives, Solomon Islands, Samoa, Fiji Islands, etc.
Global warming would cause unpredictable rainfall. It will cause scarcity of drinking water. Due to shortage water for irrigation, cultivation will fail and lead to worldwide food scarcity.
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.
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.