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PCS Liv Env

Vocabulary for Topic 5 - Evolution

TermDefinition
Adaptive Value any trait that helps an organism survive and reproduce under a given set of environmental conditions
Evolution the process by which species have changed over time
Extinction the disappearance of all members of a species from Earth
Fossil Record a collection of fossils used to represent Earth's history
Genetic Variation the normal differences found among offspring
Geologic Time Earth's history as revealed by layers of rocks
Mutation any alteration in the sequence of DNA
Natural Selection the process by which the organisms that are best adapted to a specific environment survive and produce more offspring than organisms that are not as well adapted
Overproduction the potential for a species to increase its numbers beyond the area's carrying capacity
Theory an explanation, supported by many observations and/or experiments, that can be used to accurately explain related occurrences
Created by: Ms.Sala