What inspired Ronald McNair to do science

McNair learned that the National Aeronautics and Space Administration (NASA) was looking for scientists to join its shuttle program.

Explanation:

While working as a staff physicist at hughes Research Laboratories McNair learned that the National Aeronautics and Space Administration (NASA) was looking for scientist to join the shuttle program;)

answer; a. neither end of earth's axis is tilted toward or away from the sun .is your correct answer;

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers