Question

answer the question in brief no 14

Answer 1

bec they help to make a connecting link with our ansistors.
the other answer is in the pic

Answer 2

To tracing the evolution relationships between the two organisms.

(I) if we dig into the earth and Start finding fossils ,it can be assumed that the fossils closer to the surface are more recent to those found in the deeper layers.
,(ii) by detecting the ratios of different isotopes of the same element in the fossil material.