Question

What are fossils and how to determine age of fossils 0?

Answer 1

It wasn't until well into the 20th century that enough information had accumulated about the rate of radioactive decay that the age of rocks and fossils in number of years could be determined through radiometric age dating. This activity on determining age of rocks and fossils is intended for 8th or 9th grade students.

Answer 2

The remains or left over of the dead and decaying matter
Their age can be calculated according to the area they are found in... As we go deep and deep in a the earth's crust the age of fossils found keep on increasing