13) After switching from the high-power to the low-power objective lens of a compound light
microscope, the area of the low-power field will
appear

most community's take hundreds of years to become stable

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

you know they are heterozygous for a trait because they have it as jj or jj.