Name two ways that veins and arteries are different

One of the purposes of transcription is to produce a sequence of bases that

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction