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

Recognize the importance of environmental factors and community infrastructure in disease prevention.

Understand the historical development of public health initiatives and their impact on community health.

Analyze the role of government and non-governmental organizations in the advancement of public health.

Identify key figures and their contributions to public health and nursing.