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Robert Duncan —
Robert Duncan or Bob Duncan may refer to:.. (wikipedia)
If the government is going to mandate levels and punish schools for failing, they should send that money to the school system.
The formation of glass from the melting is like starting a clock. It resets the time for us to determine billions of years later.
Unfortunately, we haven't found many very old rocks on Earth because our planet's surface is constantly renewed by plate tectonics, coupled with erosion.
