Introduction for a speech on global warming with rhyming words
Answers

Green house effect is caused by the green house gases carbon dioxide, chloro-fluoro carbon, methane, nitrous oxides, etc gases. Such green houses gases are generated by our daily activities and get collected in to the atmosphere and form a cover around the Earth which again absorbs hot sun rays and make this earth a burning earth. The absorbed heat remains in the lower circle of biosphere and enhances the temperature level. According to the statistics it has been estimated that by 2050 the rise in temperature of earth would be about 4° to 5°C. In last five centuries, it has raised by about 1°C however half of this warming is raised only during twentieth century. So, the global warming is at peak and alarms us regularly with its bad effects.
It is affecting almost all parts of the world and causing sea level to rise, glaciers to melt and many more which covers all the low land islands. It is destroying huge forests, killing algae, acid rain, etc. Acid rain is very dangerous which may destroy anything in touch. Global warming causes natural fires which may wipe out whole forests. Continuous rise in the earth temperature affects agricultural crops, forests, marine life and life growth on the earth. It cannot be solved by the effort of only one country, it needs global effort of all countries to reduces its effects and completely eliminate it.
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Global warming
Global warming is a part of climate change and is partially caused by increased greenhouse gases from burning of fossil fuels, deforestation, agriculture, and other industrial causes.
The Earth's temperature had already warmed by 1°C compared to pre-industrial levels. This temperature rise may appear small, but small rises in temperature translate into big changes for the world’s climate. This is because the amount of extra energy needed to increase the world’s temperature, even by a little, is vast. This extra energy is like force-feeding the global climate system.
Melting glaciers, early snowmelt, and severe droughts will cause more dramatic water shortages and increase the risk of wildfires in the American West.
Rising sea levels will lead to coastal flooding on the Eastern Seaboard, especially in Florida, and in other areas such as the Gulf of Mexico.
Forests, farms, and cities will face troublesome new pests, heat waves, heavy downpours, and increased flooding. All those factors will damage or destroy agriculture and fisheries.