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Chapter 6

shinjiro aragaki shinjiro aragaki shinjiro aragaki shinjiro aragaki

TermDefinition
Fossil Record It's made up of all the fossils ever discovered on Earth.
Mold The impression of an organism in a rock.
Cast A fossil copy of an organism in a rock.
Trace Fossil Preserved evidence of the activity of an organism.
Geologic Time Scale A chart that divides Earth's history into a time line.
Extinction When the last individual organism of a species dies.
Biological Evolution The change over time in populations of related organisms.
Naturalist A person who studies plants and animals by observing them.
Variation A slight difference in an inherited trait of individual members of a species.
Natural Selection 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 variations.
Adaptation An inherited trait that increases an organism's chance of surviving and reproducing in it's environment .
Camouflage An adaptation that enables a species to blend in with it's environment .
Mimicry The resemblance of on species to another species.
Selective Breeding The breeding of organisms for desired characteristics.
Comparative Anatomy The study of similarities and differences among structures of living species.
Homologous Structures Body parts of organisms that are similar in structure and position but different in function.
Analogous Structures Body parts that perform a similar function but different in structure.
Vestigial Structures Body parts that have lost their original function through evolution.
Embryology The science of the development of embryos from fertilization to birth.
Created by: goroakechi
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