One isotope of carbon differs from another in which way?

Isotopes are atoms that have the same number of protons but different numbers of neutrons. So an isotope of carbon differs in how many neutrons they have in the nucleus or the center of the atom

the Answer is number of Neutrons

Explanation:

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for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

one would be wind another would be water density