This printable crossword puzzle has 15 clues. Answers range from 5 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
living things that shape an ecosystem like plants, bacteria, prey, predators, etc.
nonliving things that shape an ecosystem like temperature, solar exposure, soil, minerals, etc.
boundary where two plates are moving apart
boundary where two plates are moving towards each other
boundary where two plates are moving past each other in opposing directions
underwater mountain range caused by magma pushing up the oceanic crust and moving the plates away from each other
remains or traces of ancient life that have been preserved through natural processes
state or process in which a species completely dies out
a distinct group of similar organisms that can interbreed and form offspring
the variety of life in a given area
number of organisms of the same species in a given area
an alteration or change in the structure or function of an organism that makes it better suited for its environment, must be heritable
ancient extinct marine arthropods (like crabs and lobsters)
a quality or characteristic determined by genes
the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.