This printable crossword puzzle on the topic of Ecology & Evolution has 19 clues. Answers range from 4 to 20 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
is made up of all the fossils ever discovered on Earth.
the impression of an organism in a rock.
a fossil copy of an organism in a rock.
the preserved evidence of activity of an organism
a chart that divides Earth's history into different time units.
occurs when the last individual organism of a species dies.
the change over time populations of related organisms.
the change over time populations of related organisms.
a slight difference in an inherited trait of individual members of a species.
the process by which populations of an organism with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations.
an adaptation that enables a species to blend in with its environment.
an inherited trait that inreases an organism's chance of surviving and reproducing in its environment
The resemblance of one species to another species.
The breeding of organisms for desired characteristic.
the study of similarities and differences among structures of living species.
body parts of organisms that are similar in structure and position but different in function.
Body parts that perform a similar function but differ in structure.
body parts that have lost their original function through evolution.
The science of the development of embryos fertilization to birth.