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Natural Selection Crossword by T. Welch

Across
The rock most fossils are found in
The island Charles Darwin studied finches on
The process by which population accumulates inherited changes over time
variety
The formation of new and distinct species in the course of evolution
Production of more of a product, commodity or substance than is wanted or needed
Inspired by the principle of natural selection, postulating that those who are eliminated in the struggle for existence are the unfit
Exact age
The process whereby organisms better adapted to the enviornment tend to survive and reproduce more offspring
Where a species is from
The remains of prehistoric organisms preserved in petrified form or as a mold or cast in rock
Sailed around the world on a ship called the BEAGLE and observed plants and animals
The process of a species, family or large group being, or becoming, extinct
Down
Interaction between organisms, populations or species, in which birth, growth and death depend on gaining a share of environment resources
Approximate age
a characteristic that enables an organism to survive and reproduce in its enviornment
Having the same structural features and patterns of genes
the intentional mating of two animals in an attempt to produce offspring with desirable characteristics or for the elimination of a trait
Difference
a diagram that links groups of organisms by showing how evolutionary lines, or lineages, branch from common ancestors