Life Science Chapter Nine Crossword

a group of similar organisms that can mate with each other and produce fertile offspring
A trait that helps an organism survie and reproduce
Preserved remains of traces of an organism that lived long ago
The process by which individuals that are better adapted to their environment are more likely to survive and reproduce
The process of change over time
A well-tested concept that explains a wide range of abservations
Any differences between individuals of the same species
Similar structures that related species have inherited from a common ancestor
Involves small changes that add up to major changes over a long period of time
Controlled by genes and acted upon by natural selection
One of the main ways a new species forms
What many insects are fossilized in
A species that no longer exists
The type of rock most fossils are found in
Compares the position of fossils in sedimentary rock layers.
A diagram that shows how different organisms might be related