Darwinism is a theory that explains the evolution of organisms.

Living organisms evolve over time.

Living organisms have evolved over millions of years.

He gave me a detailed explanation of the problem.

He explained the problem.

He is good at explaining that theory.

Neo-Darwinism is a branch of evolutionary theory that combines the theories of natural selection and genetics.

What is this organism?

Kangaroos and wallabies are an example of parallel evolution.

Convergent evolution refers to the phenomenon where different organisms develop similar features to adapt to the same environment.