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Evolution

Across
Scientist known for his work with evolution
Survivors pass on their genes to their off spring. What point is this?
Way to adjust or develop to help an animal survive
Book written by Charles Darwin
Individuals in a population have slight variations. What point is this?
Another word for babies born from parents
Down
Organisms tend to produce more offspring than can survive. What point is this?
Process by which organisms best suited to the environment survive, reproduce and pass their genes to the next generation
Changes in a population over time.
H.M.S. Beagle
Individuals struggle to survive. Which point is this?