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Which evidence best supports the theory that many species of organisms have become extinct?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
Which best describes the relationship between genetic variation and an organism’s ability to adapt to its environment?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
Which is most likely to affect a species’s chances of survival after a sudden environmental change?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
The human arm contains the radius and ulna bones. Whales, bats, and dogs also have these bones. Which statement best explains this relationship between the organisms?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
A bird builds a nest in a tree. The tree gives the bird shelter and protection while the next does not harm or help the tree. What type of symbiosis is this?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
Which can cause an organism to develop genetic variation that could be used to help it survive?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
What characteristic of living things helps them to adapt to a changing environment?
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
The process of change over time, specifically a change in the frequency of a trait over time.
genetic variation
commensalism
mutations
the fossil record shows organisms that no longer exist
genetic variation
Organisms of a population have certain traits that enable them to adapt to changes in the environment, survive, and pass thes
evolution
Humans and the other animals share a common ancestor.
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