Purpose: Informative Speech
Specific Purpose: Awareness of the threat of global warming
I. In the words of Leonardo DiCaprio after receiving his Oscar, “Climate change is real. It is happening right now. It is the most urgent threat facing our entire species, and we need to work collectively together and stop procrastinating.”
II. While many of us have heard about global warming, we do not view it significantly important as we all should. Global warming is defined as the increase in Earth’s average surface temperature and due to significant climate changes recorded by scientists taking place as of late and in years past, it is becoming a cause of concern.
III. The affects from global warming are hurting Earth …show more content…
With that being said I’ll begin by discussing what is causing global warming to take place right before our eyes.
I. To put it bluntly, the cause of global warming is human activity, primarily the burning of fossil fuels like oil, coal, and natural gas.
a. These are the significant driving factors in global warming. According to Global Warming from Encyclopedia of Global Warming and Climate Change “Many human processes ranging from industry, transportation, power stations, agriculture, fossil fuel development and usage, to residential and commercial activities have variously led to the production of high amounts of greenhouse gases.”
b. For centuries, the production and absorption of carbon dioxide and other greenhouse gases was in balance. But in the last century, human activity has overwhelmed the Earth’s natural feedback mechanism. As a result it has caused global climate change which is taking place and effecting the environment.
II. Climate change is already beginning to transform life on Earth. Around the globe, seasons are shifting, temperatures are climbing and sea levels are rising. According to Justin Gillis of the New York Times, “scientists reported that 2015 was the hottest year in the historical record by far, breaking a mark set only a year