1) The development and adoption of renewable energy sources, such as solar and wind power, have contributed to the transition to cleaner and more sustainable energy systems, reducing reliance on fossil fuels and mitigating climate change impacts.
2) The ozone layer, located in the Earth's stratosphere, protects us from harmful ultraviolet (UV) radiation.
3) The Mona Lisa, painted by Leonardo da Vinci, is one of the most famous and valuable artworks in the world.
4) The Andes, stretching along the western coast of South America, is the longest mountain range in the world, spanning over 4,300 miles (7,000 kilometers).
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