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

question 112

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.

---

Definitions:

Deferred Imitation

The process by which individuals, often children, reproduce or mimic others' actions after a delay without having observed them in the interim.

Primary Circular Reaction

An infant's repetitive action-oriented behavior, centered on their own body, that develops as a mechanism for learning about the environment.

Object Permanence

The understanding that objects continue to exist even when they cannot be observed.

Behavior Rating Scale

A tool utilized for assessing and documenting changes in an individual's behavior, often used in psychological health and education.