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17 terms

Chapter 7 Study Guide-Evolution of Living Things-7th grade

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Fossils
Evidence used to prove that the ancient ancestor of whales was a land-dwelling mammal
Population
Groups of individuals of the same species living in the same place
Darwin
Naturalist who proposed that evolution happens through natural selection
Fossil record
Timeline of life provided by the remains or imprints of dead organisms
Species
A group of organism that can mate with one another to produce fertile offspring
Speciation
Process of separation, adaptation, and division
Natural selection
Process consisting of overproduction, inherited variation, the struggle to survive, and successful reproduction
Hip bones
Whales possibly inherited this from a four-legged ancestor
Starvation, disease, competition, and predation
Populations of species are limited by these
Fossil
Trace remains of an organism that lived long ago, most commonly preserved in sedimentary rock
Overproduction
A spider producing hundreds of of eggs, in which only a few survive
DNA and genetic changes
Darwin did not include these in his ideas about evolution
Ancestor
Scientists compare DNA to support the theory that all species share a common...
Selective breeding
Could be used by farmers to produce vegetables that will grow in a specific climate
Trait
Characteristic that can be passed from parent to offspring through genes
Evolution
Process by which populations slowly change over time
Adaptation
Over time, animals may change behavior or physical appearance in response to changes in the environment