Here is a another one

When the volume and number of particles of a gas are constant which of the following is also constant

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.