La selección natural

The video explores the evolution of life, tracing back over 3 billion years to a common ancestor. It highlights Charles Darwin's revolutionary theory of natural selection, which explains how species adapt and evolve through variation, inheritance, and survival of the fittest. The process of natural selection leads to the elimination of unfavorable traits and the emergence of new species, resulting in the diverse forms of life we see today.

What does the phrase 'survival of the fittest' mean in the context of evolution?

Discuss how new species appear over time according to the text.