Explanation:
a control group does not. They should be identical in all other ways.
Answer:
An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons.
Explanation:
A) The crust and outer part of the mantle make up the lithosphere
Answer:
The answer is:
D. The population must be very large.
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