2 ordspråk av Alfred russel wallace
Alfred russel wallace
Läs om Alfred Russel Wallace på Google eller Bing. The life of wild animals is a struggle for existence. The full exertion of all their faculties and all their energies is required to preserve their own existence and provide for that of their infant offspring.
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There is a tendency in nature to the continued progression of certain classes of varieties further and further from the original type.
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