Evidence for Evolution

Front

Where are the oldest fossils found?

Back

At the lowest rock layer.

Front

What is a common ancestor?

Back

An original species from which all other species evolved.

Front

Why do humans, birds, whales, and lizards have similar arm bones?

Back

They have a common ancestor.

Front

What is common ancestry?

Back

When organisms are descended from a single ancestor.

Front

What type of evidence is shown in embryology?

Back

Embryology is the study of embryos and their development, providing evidence for evolution.

Front

What are homologous structures?

Back

Structures in different species that are similar due to shared ancestry.

Front

What is natural selection?

Back

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What are vestigial structures?

Back

Body parts that have lost their original function through evolution.

Front

What is fossil evidence?

Back

Fossils are preserved remains or traces of ancient organisms, providing evidence for evolution.

Front

What is the significance of transitional fossils?

Back

Transitional fossils show the intermediate states between an ancestral form and its descendants.