Which of the following statements is true? (4 points) the earth's inner mantle is made of solid rock. the earth's inner mantle and asthenosphere are made of liquid rock. the earth's asthenosphere is made of solid rock. the earth's inner mantle and asthenosphere are made of solid rock

before it leaves the nucleus of a eukaryotic cell, mrna is altered in the following ways: - a cap is added to the 5' end of the mrna molecule; - a poly a tail is added to the 3' end; - introns are removed and exons are spliced together.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.