Is there a picture that goes with this or a question?
In 2016, a rare transit of Mercury happened, where the planet crossed the face of the sun. Mercury's transit may have yielded secrets about its thin atmosphere, assisted in the hunt for worlds around other stars, and helped NASA hone some of its instruments.
Answer:
you need a pic, no one knows what you're talking about
Human activities in the united states such as burning fossil fuels for electricity, heat, and certain transportation.
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