How do you identify the rock layer

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.

Explanation:

although mowgli is no longer accepted by the pack, he will always love his mother and brothers.

c) problem and solution