Weather a star ends up as a red dwarf or a neutron star depends on what characteristic

low luminosity (say, not more than one tenth that of the sun), small mass (say, not more than three quarters that of the sun) and high density (perhaps 30–100 times the density of the sun).

Explanation:Hope this helps

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.