Prepare a brief speech on global warming. You have to deliver the speech in your class.

Explanation

**Speech on Global Warming**

Good morning, everyone. Today, I would like to talk to you about a pressing issue that affects our planet: global warming.

Global warming refers to the gradual increase in the average temperature of the Earth's surface. This phenomenon is primarily caused by the rising concentration of greenhouse gases in our atmosphere. Greenhouse gases, such as carbon dioxide, methane, and water vapor, play a crucial role in maintaining the Earth's temperature. They trap solar radiation that is released back by the Earth, creating a natural greenhouse effect that keeps our planet warm.

However, human activities, such as burning fossil fuels, deforestation, and industrial processes, have significantly increased the levels of these greenhouse gases. As a result, we are witnessing a rise in the Earth's temperature, which leads to various environmental issues, including melting ice caps, rising sea levels, and extreme weather conditions.

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