Natural Selection Crossword Puzzle

About the Natural Selection Crossword Puzzle

This puzzle covers natural selection and the biological processes that influence how populations change over time. Search for terms such as adaptation, mutation, fitness, and genetic drift, along with examples including Galapagos finches and the peppered moth. It is suited to students learning evolution, science teachers, and anyone curious about how organisms respond to environmental pressures.

This crossword draws on 35 clues about Natural Selection. Each grid uses a different handful and fits them together a new way, so press New puzzle for another whenever you finish. The answers are in the answer key when you print, and behind the Reveal button when you play.

Sample clues

• •Feature improving fit to surroundings (10 letters)
• •Struggle for limited resources (11 letters)
• •Surrounding conditions affecting an organism (11 letters)
• •Those most likely to reproduce (7 letters)
• •Random change in variant frequencies (12 letters)
• •Naturalist who proposed use and disuse (7 letters)
• •Industrial-era insect whose color forms shifted in frequency (12 letters)
• •Animal hunted for food (4 letters)

Teaching this topic or planning a party? Make your own crossword with your own words and clues.