Radioactive dating is used to determine the age of fossils, and dinosaurs are the most popular fossils. Given these facts, how can we figure out how long a dinosaur has been dead among the following options:
- Measure the depth it was found
 - A set number of times
 - It remains dormant
 - Radioactive dating
 - Test the soil it was found in
 - Compare it to other dinosaurs
 - focusing a lens
 - Continents drifting


 

    Radioactive dating     