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.
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Answer: Number 4 goes to - rise of one part of Earth's crust above another
Number 3 goes to - sinking of one tectonic plate beneath another
Number 1 goes to - pressure an chemical processes that transform sediment into rock
Number 2 goes to - small pieces of broken down,weathered rock
Explanation:
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