Understand the statement and analyse the answer based on the given reason:
 
1. Types of fossilization:
 
Assertion:When the dead remnants of Trilobita got buried in the segment it dissolves by the underground water leaving a cavity like depression called the mould.
Reason:The fossils of Trilobita are examples of moulds.
          
                   
2. Radioactive carbon dating
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Assertion:Absolute dating determines the specific age of a fossil by measuring the decay of isotopes.
Reason:Carbon, uranium, lead or potassium are the various radioactive elements present in fossils.
 
 
3. Exobiology
 
Assertion:The most important idea in astrobiology is the concept of a habitable zone.
Reason:Earth is the only planet in the goldilocks zone in our solar system.