The spectrum of a distant star contains sodium lines that are offset from their normal position, as shown. what is the most a. the star is relatively hot. b. the star is relatively cool. c. the star is moving rapidly toward us. d. the star is moving rapidly away from us. likely explanation?

Why did southern business leaders want to increase the number of slaves

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon

8. what happens to matter during a chemical reaction