How Come an Animal's Carbon-14 Levels Do Not Start to Decrease

question 10

Multiple Choice

How come an animal's carbon-14 levels do not start to decrease until it dies?

• A)because it constantly replenishes its carbon-14 supply by eating plants with carbon-14 in them
• B)because it constantly replenishes its carbon-14 supply by breathing air with carbon-14 in it
• C)because it is constantly being bombarded with cosmic rays
• D)carbon-14 only starts to decay after the animal dies
• E)the carbon-14 levels do not decrease because the carbon-13 in its skin protects it from cosmic rays

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A type of security that signifies ownership in a corporation, representing a claim on part of the corporation's assets and profits.

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