Venus will help us understand what happens when the greenhouse effect is really extreme but it's not a really good example of what will happen to Earth because of human activities. Life on Earth would completely die due to the extreme temperatures way before reaching even half of the concentrations of carbon dioxide on Venus. Mars doesn’t really have any greenhouse effects. Mars does have some atmospheric carbon dioxide but almost no atmosphere but the atmosphere it does have is so thin that it cannot keep energy from the Sun. That’s why there are extreme temperature contrasts between day and night and sun or shade. However, most scientists say that Mars used to be warmer in and even had oceans, which means that the atmosphere was also very different. About 3600 million years ago, something happened and the planet evolved towards its current state. studying the planet could tell us what could have caused such a huge change
The deforestation of the Amazon rainforest to create land for the large-scale livestock rearing for meat destroys the water catchment area, leading to the water shortages and global warming.
To maintain a constant global average temperature, all of the sun's radiation that enters Earth's atmosphere must eventually be sent back to space. This is achieved through Earth's energy balance. ... ~50% of the incoming energy is absorbed by the earth's surface i.e. the land and oceans.
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Cities grew as they became sites of industrial production, centers for banking and other financial networks, the intersections of continental trade routes, and access points for global empires. Other European cities experienced similar or even more rapid periods of growth.
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because urban areas are cenralized thus allowing one reach a bigger market
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