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100
How does natural selection work to cause change in a population?
The members of the population differ so that only some survive when the environment changes.
100
The diversity within the wild bird species in the diagram below can best be explained by which process?
natural selection
100
According to Darwin, offspring most likely to survive are those that
are best adapted to the environment
100
Natural selection can best be defined as
survival of those organisms best adapted to the environment
100
What is a homologous structure?
structure that looks the same but has a different function
200
Animals with favorable variations reproduce more successfully than organisms with less favorable variations. This statement best describes the concept of
survival of the fittest
200
Darwin's studies of finches suggest that the differences in beak structure were most directly due to
adaptations of the finches to different environments
200
An organism is able to live well in its environment because of special characteristics called
adaptations
200
Differences in the bone arrangements support the hypothesis that these organisms
have adapted to live in different environments
200
What is an example of a homologous structure?
A whale's fin and a bat's wing. They both look similar but they perform different things. A whale swims and a bat flies
300
If a species is no longer able to reproduce, it will
become extinct
300
Evidence that living things have evolved over hundreds of millions of years can be found in
rocks containing fossils
300
What are the 4 evidence of evolution?
- fossil record
- comparative anatomy
- comparative embryology
- comparative biochemistry
300
Many scientists suggest that billions of years ago, life on Earth began with
simple, single-celled organisms
300
Structural changes that occur in certain plants over time and help them to survive in dry habitats are examples of
adaptations