How Can a Half-Life Be Used to Tell the Age

question 49

Multiple Choice

How can a half-life be used to tell the age of a sample?

• A)The half-life of an isotope is constant.
• B)The amount of radioactive form depends on the amount of radiation in the surroundings.
• C)The ratio between the radioactive form and the stable form depends on the archaeological record.
• D)The ratio between the radioactive form and stable form varies regularly with time.
• E)both C and D

Learn the global statistics regarding freshwater consumption and waste.

Recognize the ecological and economic impacts of human activities on water bodies.

Understand the methods and challenges of desalination.

Identify sustainable practices for water usage.

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