Extended Friday CFU

Which of the following is NOT an abiotic factor that an animal interacts with in its

habitat in order to survive?

• air

• water

• food sources

• sunlight

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• A

• B

• C

• D

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Which of the following would be the most likely result of a widespread disease to

the beetle population?

• The mice and frog populations would have less available food sources.

• The grasshopper population would have less grass to consume.

• The grass population would decrease.

• The hawk population would have less snakes to consume.

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Which statements would negatively affect the cycling of matter and flow of

energy within the ecosystem? Select TWO correct answers.

• I

• II

• III

• IV

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A grassland ecosystem with a variety of plants, insects, birds, and mammals has

been thriving for hundreds of years. Over the past decade, humans have started

to develop the land for residential neighborhoods and shopping centers. What do

you expect to happen over time to future generations of living organisms in the

ecosystem?

Read the question carefully. Write your answer and evidence in the box provided.

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Human activities can have a significant impact on Earth’s ecosystems. Which of

the following is a beneficial impact that can result in positive changes within an

ecosystem?

• Creating larger cities with more people

• Releasing more greenhouse gases into the environment

• Clearing large areas of land for new construction

• Carpooling (driving in one car with several people) to school or work to conserve fuel

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Fill in the blanks to correctly complete the statement. Use the terms “structure”

and “function” to help complete the statement properly.

A duck has webbed feet which allow it to push against the water in order to swim

more efficiently. Swimming more efficiently in water is the _______________ of

webbed feet. Webbed feet are an important _______________ of a duck.

Images of these two organisms are shown.

These adaptations most likely help the prickly pear cactus and the Texas horned lizard --

• release water

• obtain food

• reproduce quickly

• protect themselves

An old-growth forest has many tall trees. It also has many smaller shrubs and plants that grow much closer to the ground under the tall trees.

Which factor is most likely responsible for limited the growth of these smaller shrubs and plants in the forest?

• Limited access to sunlight

• Limited access to water

• Limited access to nutrients

• Limited access to oxygen

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What are TWO likely reasons why the striped skunk has a much greater population in the wild than the giant panda?

Read the descriptions and question carefully.

• The giant panda population is greater because the striped skunk uses a strong odor to sting its predators.

• The skunk population is greater because the giant panda only produces one offspring every two years.

• The skunk population is greater because they have more predators than the giant panda.

• The skunk population is greater because it has access to a larger variety of food sources versus the panda.

• The giant panda population is greater because they are larger and has less predators than the striped skunk

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