Question

What have we learned from fossil evidence about evolution?

It is an abrupt change.
The process is observable.
It takes place during one lifetime only.
The most complex traits are always selected.

Answer 1

Fossil documents the existence of now extinct species, showing the different organism have lived on earth during different periods of the planet's history. They can also help scientists reconstruct the evolutionary histories of present-day species.

Answer 2

The answer is B. "The process is observable."

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