Question

What are fossils? How are they formed? List two different ways of determining the age of fossils.

Answer 1

fossils are formed in the earth crust by decaying of animals,human bodies etc example are petrol

Answer 2

fossil are remaines of plants or animals from decades. these are very useful.they are formed by denudation activities.
age of fossil fuels can be known by

carbondating method
isotope calculation