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In natural selection, the selective agent is the

• humans
• mutations
• breeders
• environment

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A  population of cockroaches was sprayed with an insecticide.  Some cockroaches survived and produced a population of cockroaches that was resistant to this spray.  What can BEST be inferred from this example?

• species will adapt no matter what the environment
• environment has no effect on the survival of an organism
• Individuals with favorable variations survive and reproduce
• Insecticides cause mutations that are passed on to the next generation

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A camel has eyelashes that work to keep the dust and sand out of its eyes.

• All living things adapt to their environment
• All living things grow and develop
• All living things have cells
• All living things display organization

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A large population of cockroaches was sprayed with an insecticide. A few of the cockroaches survived and produced a population of cockroaches that was resistant to this spray. What can best be inferred from this example?

• a species will adapt no matter what the environment.

• the environment has no effect on the survival of an organism

• insecticides cause mutation that are passed on to the next generation

• individuals with favorable variations survive and reproduce.

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What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

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many years to reach reproductive maturity

• K-selected

• r-selected

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Natural selection is

• survival of the fittest
• humans change
• two species are the same
• more animals survive

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The rock pocket mice changed color over time because they noticed that their environment had changed to a darker color so they decided it would be a good idea to have dark fur to blend in.

• True

• False

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Which of the following is a factor in natural selection?

• Individuals of species compete with one another to survive.
• All species are genetically diverse.
• Individuals better able to adapt to changes leave more offspring.
• All are correct 

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What is the best definition of animal adaptation?

• Changes to an animal's diet.

• Characteristics that help animals survive.

• Characteristics of an animal's habitat.

• Skills learned in order to hunt.

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