4.
What is the 'violent controversy' that has raged on Mars over
centuries?
5. Which physical feature on the Earth's surface has been
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Answer:
It's a puzzle why ancient Mars had liquid water. Mars has an extremely thin atmosphere today, and early in the planet's ...
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answer no 4
Different observation show that more than two third of the planet is covered with liquid. The violent cintroversy raging on mars referse to whatever the liquid found was water or in something else
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