An approach to biological classification in which organisms are categorized into groups based on hypotheses of most recent common ancestry is termed as:

A major part of the fossil records is made up of calcium carbonate and calcium phosphate coming from the animals' _______ that had evolved during the Cambrian period.

The eukaryotes cells might have evolved when a large anaerobic amoeboid prokaryote ingested small aerobic bacteria and stabilized them instead of digesting them. This idea is called:

Which of the following does not display adaptive radiation?

The technique that utilizes radioactive impurities of materials to trace or assign absolute dates when they were formed is called  _______.