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Natural Selection Crossword

Across
The point or place where something begins.
Different species.
A group of species.
Remain of animals.
Relative order of the past.
Any method to determine the age of a rock.
Down
Characteristic that enables on organisms to survive and reproduce.
Sailed on a ship called The Beagle and observed plants and animals.
Process by which populations accumulate inherited change.
When animals best adapted to their environment tend to survive and transmit their genetics.
Populations evolve to become distinct species.
Rock that has formed through the deposition and solidification of sediment.
The disappearance of species on Earth.