How does UV rays kill germs but grow plants?
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UV rays from the sun are harmful to human skin and can cause sunburn, skin cancer, and other skin damage. However, these same UV rays can also kill germs. This is because UV rays damage the DNA of bacteria, viruses, and other microbes. This damage can prevent the microbes from reproducing, and eventually leads to their death. While UV rays can kill harmful microbes, they also help plants to grow. This is because UV rays help plants to produce vitamin D, which is necessary for plant growth.
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