Atoms are the smallest unit of non-living things and CELLS are the smallest unit of living things.
A) is your best answer.
Relative Dating gives the 'relative dating', which allows one to find the difference of age between many different of fossils. However, radioactive dating is used to get a more exact measurement of a fossil, but it can only be used for certain types of fossils.
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Answer:Yo me imaginaria En varias partes de esta historia se describe cómo es el lugar donde vivía Eireté,Releé y señalá todos los fragmentos
You can classify them in what phase they are in: solid, liquid, gas
You can classify them in Sizes
You can classify them by the number of moons they have
You can classify them by distance from the sun
You can classify them all as heliocentric or orbiting/circling around the sun
You can classify them by color