12 Questions
What is the definition of a species?
Interbreeding populations of organisms that can produce healthy, fertile offspring
What is the primary source of variation in a population?
Mutations
What is the result of adaptation in a population?
Populations becoming suited for specific niches
What occurs when the environment changes?
Habitats are destroyed and biodiversity decreases
What is the definition of biodiversity?
The variety and abundance of species that make up a biological community
What is the role of adaptation in a population?
To increase the chances of survival and reproduction
What is the primary explanation for the distribution of fossils and living organisms worldwide?
The movement of continental plates
What is the name of the process that describes the movement of solid continental plates above Earth's molten core?
Continental drift
What is the approximate percentage of types of organisms that have gone extinct over time?
99%
What is the term used to describe the preserved remains or imprints of ancient organisms?
Fossils
Why are fossils of Mesosaurus found in both South America and Africa?
Because South America and Africa were joined at one time
How long does the Precambrian Time period represent on the 24-hour clock of Earth's history?
22 hours
Test your understanding of evolution concepts including species, niche, variation, and adaptation. Learn about the differences between individual members of a population and how variation occurs during sexual reproduction.
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