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Chapter 6 Vocab

Across
An inherited trait that increases an organisms chance of surviving and reproducing in its environment
The resemblance of one species to another species
When the last individual organism of a species dies
An adaptation that enables species to adapt to its enviorment
The change over time in the populations of related organisms
Body parts of organisms similar in structure and position
Made up of all the fossils ever discovered on earth
Body parts that have lost their original function through evolution
The impression of an organism in a rock
Process in which populations of organisms with variations live longer, compete better, and reproduce more
A person who studies plants and animals by observing them
A chart that divides earths history into different units
Down
The preserved evidence of the activity of an organism
A fossil copy of an organism in a rock
A slight difference in an inherited trait of individual members of a species
The study of similarities and differences among structures of living species
Body parts that perform a similar function
The science of the development of embryos