The Model Describes the Amount of Cesium-137 Remaining After

question 101

Multiple Choice

The model describes the amount of Cesium-137 remaining after t years. Which one of the following written statements best describes the behavior of Cesium-137?

• A) The amount of radioactive substance decreases by half every years.
• B) The amount of radioactive substance increases by half every year.
• C) The amount of radioactive substance increases by half every years.
• D) The amount of radioactive substance decreases by half every 79 years.
• E) The amount of radioactive substance decreases by half every year.

---

Definitions:

Homeostasis

A state of equilibrium, balance, or lack of conflict.

Implicit

Something suggested or understood without being directly expressed.

Explicit

Clearly expressed or fully detailed, leaving no room for confusion or doubt.

Social Norms

Shared, unstated rules or standards of behavior that are considered acceptable within a group or society.