What is evolution
Development of $DNA$ from nucleotides
Development of organism through time
Development of a cell from chemicals
None of these
What are the key concepts in the evolution theory of Darwin ?
Lamarck's theory of evolution is also called
Contribution of scientist :
$(a)$ Charles Darwin
$(b)$ Lamarck
The scientists believe that evolution is gradual. But extinction, part of evolutionary story, are 'sudden' and 'abrupt' and also group-specific. Comment whether a natural disaster can be the cause for extinction of species.