Question

“Fossils are related to evolution”, justify this statement. Give the two ways by which age of the fossils can be estimated?
Answer:
Preserved traces of living organisms are called fossils.
Two ways of determining age of fossils are:

Answer 1

Fossils and their study is useful in knowing about the species which are no longer alive. They provide evidence and missing links between two classes. They are helpful in forming a sequence of organisms in the pathway of evolution.
Two ways by which age of fossils can be determined are :
1. If we dig into the earth and start finding fossils, it can be assumed that the fossils closer to surface are more recent to those found in deeper layers.
2. By detecting the ratios of different isotopes of the same element in the fossil material.

Answer 2

Answer:

Explanation:

Fossils are the dead hard parts of the creatures used to live on earth. These are related to evolution as if the fossils of primitive organisms are compared with the present day organisms then similarities between them can be traced. This suggests that how organisms are related with their ancestors.

The two ways by which the age of the fossils can be estimated by:

1. Relative dating: This method can be used to determine the approximate age of the fossil by comparing the fossil with that of the rocks and other objects found near the fossil and relative to the fossils.

2. Absolute dating: This method can be used to determine the exact age of the fossil. This process involves the radiometric dating in which the isotopes associated with the fossil and their decay rate can be determined to observe the age of the fossil.