The change in genetic characteristics of a species over time is called:

Differences between individuals are hereditary which means they are passed from parents to

The unequal survival and reproduction that results from the presence or absence of certain traits is called:

Evolution is caused by the process of:

When the last member of a species dies and is gone forever it's called:

When two or more species evolve in response to each other it's called:

The main reason why species must evolve or risk going extinct is because this changes:

Structures that are passed down from a common ancestor but have been adapted for different purposes are:

The deeper underground you find a fossil, the ____ it probably is.

Preserved remains of dead organisms are called

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