200 bce was the last time we have seen them
Answer:
Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.
Explanation:
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Answer:
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False, the numbers are not millions. According to statistics, teens only make up 7% of 1 million people in the US are infected with HIV each year. In 2010, it was about 12,000 of youth were infected mostly occurring in African American males.