The table below shows the approximate distances of two stars from Earth. Name of star | Approximate distance from Earth (in light years)
Alpha Centauri | 4.4
Luyten's Star | 12.39

Which of these is a correct conclusion about the two stars?
a. Light from Alpha Centauri has to travel a distance of less than 5 million kilometers to reach Earth.
b. Light from Luyten's Star has to travel a distance of less than 5 million kilometers to reach Earth.
c. Photographs of the stars taken at the same time show a more recent image of Alpha Centauri than Luyten's Star.
d. Photographs of the stars taken at the same time show a more recent image of Luyten's Star than Alpha Centauri.

protist eukaryotes that are not plants, animals, or fungi ("misfits")

just go with your heart buddy

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.