Evidence of Evolution Flashcard

Front

What is the fossil record?

Back

The record made up of all the fossils ever discovered on Earth.

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What are vestigial structures?

Back

Body parts that have lost their original function through evolution.

Front

How do fossils provide evidence for evolution?

Back

Fossils show changes in physical structures over time, indicating how species have adapted to their environments.

Front

What does it mean if a species has a vestigial structure?

Back

It means that the structure was once useful for the species' ancestors but is no longer necessary for survival.

Front

What can we learn from comparing skeletons of ancient and modern species?

Back

We can reveal structural changes and adaptations that have occurred over time.

Front

What is the significance of environmental changes in evolution?

Back

Environmental changes can lead to adaptations in species, such as changes in body size or structure.

Front

What is the principle of relative dating in geology?

Back

It is a method used to determine the age of rocks and fossils by comparing their placement in layers.

Front

What does it mean if a layer of rock is younger than another layer?

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It means that the younger layer was formed after the older layer.

Front

How can fossil evidence indicate the age of a species?

Back

By examining the layers of rock in which fossils are found, scientists can estimate the age of the species.

Front

What is an example of a vestigial structure in humans?

Back

The appendix is an example of a vestigial structure in humans.