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Which of these statements is correct about how the first forms of life appeared on Earth? A.Non-living molecules evolved into living molecules by chemical changes. B.Reproducing molecules evolved into
asked
Sep 21, 2017
Chemistry
high-school
2
answers
4
votes
169k
views
A round, hollow rock that is lined with mineral crystals is known as a a. mineral rock c. vein b. geode d. none of the above
asked
Mar 11, 2017
Geography
high-school
2
answers
0
votes
1.7k
views
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