Estimate the age of a bottled wine that has a tritium,3H,content 60% that of freshly bottled wine.Tritium decays by beta decay and has a half-life of 12.3 yr. 
Definitions:
Tropical Rain Forests
Rich, dense forests found in tropical regions, characterized by high rainfall and biodiversity, acting as vital carbon dioxide sinks.
Lumber Sales
The process or activity of selling wood that has been processed into beams and planks.
Firebreaks
Cleared areas or barriers used to stop or slow the spread of wildfire.
Fire-Retardant Chemicals
Substances that are applied to materials to prevent the start or slow the spread of fire.
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