Evolution - Life Connections

The video explains how all life on Earth shares a common ancestor from over 3.5 billion years ago. It introduces evolution as the process by which species change over generations through mutations and natural selection. The video illustrates speciation, where separated groups of a species adapt to different environments, eventually becoming distinct species. This process adds branches to the tree of life, resulting in the vast diversity of species we see today.

What is the common origin of all life on Earth?

• Multiple organisms from different times

• A simple organism from 3.5 billion years ago

• A complex organism from 2 billion years ago

• An organism from 1 billion years ago

How do new characteristics appear in a species?

• Through environmental changes

• Through diet changes

• Through genetic mutations

• Through migration

What role does natural selection play in evolution?

• It makes beneficial mutations more common

• It prevents species from changing

• It eliminates all mutations

• It speeds up the mutation process

How can one species evolve into multiple species?

• By increasing their population size

• By changing their diet

• By being separated and adapting to different environments

• By migrating to a new area

What is the result of evolution over billions of years?

• The vast diversity of life forms we see today

• The emergence of a single dominant species

• The extinction of all species

• A decrease in species diversity