Earthquakes and global warming
Dust from volcanoes reflects heat radiation from the Sun, leading to cooling. But dust from factories reflects heat radiation from cities, stopping it from escaping. This leads to warming in urban areas.
Carbon dioxide is a greenhouse gas. It absorbs heat energy that is radiated from the Earth’s surface and prevents it from escaping into space. This keeps the Earth warmer than it would otherwise be. But human activities are increasing the amount of carbon dioxide in the atmosphere. This increases the greenhouse effect and leads to global warming.
Human activities leading to global warming include:
Most of the energy we use comes from burning fossil fuels. These release carbon dioxide when they burn. So the increasing use of energy is leading to increasing amounts of carbon dioxide in the atmosphere.
When land is cleared for timber and farms, there are fewer trees to remove carbon dioxide from the atmosphere by photosynthesis. Also, if the fallen trees are burned or left to rot, additional carbon dioxide is released into the atmosphere.
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