evolution Crossword
This printable crossword puzzle on the topic of Ecology & Evolution has 15 clues. Answers range from 4 to 21 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
what set of information controls a trait
the difference between individuals of the same species
the millions of fossils that scientists have collected
when no members of a species are still alive that is called
what do u call the gradual change in species over time
the theory that evolution occurs slowly but steadily
a fossil formed when minerals replace all or part of an organism
a trait that helps an organism survive and reproduce
a well tested concept that explains a wide range of observation
an unstable element that breaks down into a different element
the theory that species evolve during short periods of rapid change
a diagram that shows how scientists think different groups of organisms are related
a technique used to determine the actual age of a fossil on the basis of the amount of a readioactive element it contains
the process of selecting a few organism with desired trait to serve as a parent
a technique used to determine which of two fossils is older based on the layer of rock in which it was found
