Potassium-argon dating can determine the age of the fossils
Of about $5,00,000$ years old
$2$ billion years old
Of all ages
Of azoic era only
(a) Potassium-argon have half life period as $1.3 \times {10^9}$ years.
The study of the homologous structures in mature organisms provides the evidence for the evolutionary relationships among certain groups of organisms. Which field of the study includes this evidence of evolution?
Peripatus is known as a connecting link, because it has the characters of both
The rate of appearance of new life forms is linked to their
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