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Question 1

A)
Consider the following scenario:
You are a scientist observing rodents on the Galapagos Islands. You notice that the introduction of
new bird of prey has limited the number of rodents.
What term best describes the factor that is limiting the number of rodents the environment can
support?
(1 point)
fitness
variation
selective pressure
food supply
Question 2
A)
Consider the following scenario:
In an aquatic bird population, some birds have long legs. Other birds have short legs. The food
supply is minimal. The birds with long legs are able to wade farther into the water where they can
find fish. Over time, the birds with long legs become more common.
What scientific term best describes this scenario?
(1 point)
mutation
fitness
natural selection
selective pressures
Question 3
A) What relationship exists between changes in the environment and variations? (1 point)
Changes in the environment can act only on existing variations in a population.
Changes in the environment cannot change which traits are advantageous.
Changes in the environment can only cause new variations to appear.
Changes in the environment cannot influence the fitness of an organism.
Question 4
A) Over time, the variation that gives an advantage (1 point)
can limit the number of individual organisms.
becomes less common in the population.
can limit the number of selective pressures.
becomes more common in the population

1 answer

Here are the answers to your questions:

Question 1
A) The term that best describes the factor limiting the number of rodents the environment can support due to the introduction of a new bird of prey is:
selective pressure

Question 2
A) The scientific term that best describes the scenario where birds with long legs are favored due to their ability to find food more effectively is:
natural selection

Question 3
A) The relationship that exists between changes in the environment and variations is:
Changes in the environment can act only on existing variations in a population.

Question 4
A) Over time, the variation that gives an advantage:
becomes more common in the population.

Feel free to ask if you have any more questions!