a) what is meant by analagous organs ?
b) Define variation in relation to a species why is variation beneficial to the species .

Explanation

(a) Evolutionary relationships can be traced by studying fossils, by studying homologous and analogous organs, by comparing the embryo or of different animals and by comparing the DNA.s ot dilterent species.
(b) Variation are difterences that occur between the organisms of same species in spite of the same basic features.
Variation in species promotes survival of an organisin m the changing environment by increasing the adaptability.