Question

multiple choice question
cesium - 137 has a longer ____ half - life than a ____ half - life.
o biological, physical
o physical, biological

Explanation:

Cesium - 137 has a longer physical half - life than a biological half - life. The physical half - life of a radioactive isotope like cesium - 137 is related to its radioactive decay process, while the biological half - life is related to how long it takes for half of the substance to be eliminated from a biological system.

Answer:

B. physical, biological