Mmmmmm mercury sexiest planet thanks for the pic
Answer:
Together,the number of protons and the number of neutrons determine an elements isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.
hope it is helpful....
Answer:
option a
Explanation:
because When hydrogen is used to power a fuel cell, the only byproducts are water and heat—no pollutants or greenhouse gases are produced.
Answer: B, the number of species in a community
Explanation:
