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)
Responses
food supply
food supply
fitness
fitness
variation
variation
selective pressure
selective pressure
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)
Responses
natural selection
natural selection
selective pressures
selective pressures
mutation
mutation
fitness
natural selection
What relationship exists between changes in the environment and variations?(1 point)
Responses
Changes in the environment cannot influence the fitness of an organism.
Changes in the environment cannot influence the fitness of an organism.
Changes in the environment cannot change which traits are advantageous.
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 can only cause new variations to appear.
Changes in the environment can act only on existing variations in a population.
Changes in the environment can act only on existing variations in a population.
Over time, the variation that gives an advantage(1 point)
Responses
becomes more common in the population.
becomes more common in the population.
can limit the number of individual organisms.
can limit the number of individual organisms.
can limit the number of selective pressures.
can limit the number of selective pressures.
becomes less common in the population.
becomes more common in the population.
Which sentence contains an example of verbal irony? (1 point)
Responses
"Would you give me a hand moving these boxes upstairs?" Dad asked politely.
"Would you give me a hand moving these boxes upstairs?" Dad asked politely.
"I guess this is going to be a group effort," Han said, looking at the full sign-up sheet.
"I guess this is going to be a group effort," Han said, looking at the full sign-up sheet.
When I stepped outside, the cold air hit me like a ton of bricks—I quickly jumped back inside.
When I stepped outside, the cold air hit me like a ton of bricks—I quickly jumped back inside.
Seeing the untouched bowls of chili, the chef laughed. "One of my biggest hits!"