Fusion is promoted in the core of the Sun by the _______ there.
a. low temperature and low density
b. high temperature and high density
c. low temperature and high density
d. high temperature and low density
Question 2
Sit on the floor with your legs straight out, raise your straight arm out with your thumb up such that your thumb aligns with one of your big toes, rapidly blink your left and right eye, and observe how your big toe appears to shift positions. This demonstration is an example of _________________.
a. Newton's first law b. uniform circular motion
c. parallax d. retrograde motion