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ddd [48]
2 years ago
14

PLEASEEEEEE HELPPPPPP

Biology
1 answer:
nikklg [1K]2 years ago
5 0

A. absolute

a. radioactivity

b. unstable atom

B. Atoms

1. atom

a. nucleus.

b. electrons.

2.proton

a. neutrons

b. isotopes

3. stable isotopes

a. radioactive isotopes.

b . radioactive decay.

c. parent isotopes.

d. daughter isotopes.

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Explanation:

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