This printable crossword puzzle on the topic of Ecology & Evolution has 20 clues. Answers range from 5 to 19 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Organism
Niche
Herbivore
Biotic
Food Web
Ecosystem
Producer
Biodiversity
Competition
Abiotic
Decomposer
Adaptation
Mark and Recapture
Primary Succession
Keystone Species
Population
Nitrogen Fixation
Indirect Observation
Pioneer Species
Energy Pyramid