Isotopes of elements have different:

a.) atomic masses

b.) atomic numbers

c.) electron shells

d.) numbers of protons

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

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