global warming
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Global Warming Speech 3
Good morning to my respected teachers and my dear friends, I would like to speech on the topic of global warming today. Global warming is mainly caused by the increasing concentration of greenhouse gases in the earth’s atmosphere. Some of the greenhouse gases are CO2, water vapour, methane, nitrous oxide and ozone. When these gases get collected to the lower environment, it makes a cover which easily allows all the hot radiations of sun to the earth however restrict its escape back to the space. This process is called as the Green House Effect. Such gases in the atmosphere trap hot radiations and keep earth warm by increasing temperature.
The level of green house gases also raise because of the human activities such as burning trees, burning fissile fuels, electric lights, use of refrigerator, microwave, air conditioner, and other electric machines. Such process releases high percentage of carbon dioxide and other green house gases into the atmosphere causing the earth temperature to rise. Rise in heat causes more water from earth to evaporate into atmosphere, water vapour again absorbs more heat and makes earth atmosphere warmer. Global warming has changed natural processes rainfall patterns, length of seasons, rise of sea level, ecology balance and many more. It is a powerful demon affecting our lives to a great extent so it needs to be solved on urgent basis by the effort of all of us.
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Global Warming Speech 4
Good morning to all my respected teachers and dear friends at this great occasion. I would like to give a speech over the global warming which is a most prominent environmental issue. Day by day, we are feeling great changes in the atmosphere and climate of the earth. The earth atmosphere is getting warm gradually however the process has become fast in last few years. The natural disasters we are facing now a day such as earthquakes, tsunami, cyclone, storm, thunder, etc are the result of global warming. We are feeling a huge change in the season’s length like winter season is getting short and summer season is getting long. Polar icecaps and glaciers are melting to a great extent.
In some regions of the country, there is decrease in the snowfall amounts; spring season seems to occur earlier and flowers bloom before time from few decades. Huge climate change is the indication for us indicating bad effects of the global warming. Birds are migrating from hotter to colder regions, hurricanes in the Atlantic are more frequent having high intensity. Sea levels are rising continuously, glaciers are melting because of stronger heat waves, human health is getting deteriorated, climate is changing, weather patterns are changing, environment temperature is increasing affecting whole climate adversely, and other problems because of the human industrial activities.
Earth’s surface atmosphere is steadily increasing because of the primary causes of global warming such as green house effect of the green house gases. Green house gases collected in the atmosphere like carbon dioxide traps the dangerous UV rays and makes environment hotter. Because of the global warming drought and flood may occur more frequently. Increased earth’s temperature worldwide causes more moisture absorption and thus droughts. Due to the drought fields do not get adequate soil moisture so the farmers face lots of financial hardship. The worldwide people’s demand of fruits, vegetables, and grains do not become fulfil due to drought. Thus, global warming brings food shortages all over the world.
Warmer air in the atmosphere holds lots of moisture than the cool air which results in the flood in many areas. Both droughts and floods adversely affect the crop production. These are natural disasters affecting human, animals and plants lives in many aspects. Coral reefs are considered to be the most important for the water lives as they provide food and shelter to the fish, crabs, sea turtles, and other aquatic animals. So, the global warming is a big threat to the existence of life here on the earth in future. It needs to be solved by the global effort of people on urgent basis to maintain healthy and happy life here.
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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.
·Hotter days
·Rising sea level
·oceans are warming
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.
Disruption
Allergies, asthma, and infectious disease outbreaks will become more common due to increased growth of pollen-producing ragweed, higher levels of air pollution, and the spread of conditions favorable to pathogens and mosquitoes.
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