An ecologists is someone who:

• Studies the heavens (stars)

• Studies how different environments interact with each other

• Studies cars

• Studies cameras

A rocky island appears as oceanic waters recede. Which of the following forms of vegetation would probably appear first on bare rocks?

• Lichens

• Weeds (large)

• Shrubs

• Pioneer trees

True or false: Biotic factors are PHYSICAL things in an environment like rocks, soil, and sunlight

• True

• False

After a forest fire, what is the most likely order in which these stages appeared?

• D→ C→ A→ B

• B→ D→ C→ A

• A→ B→ C→ D

• B→ C→ D→ A

Tags

NGSS.MS-LS2-1

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The sequence of stages leading from bare field to stage D best illustrates the process known as:

• Replication

• Recycling

• Feedback

• Succession

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NGSS.MS-LS2-3

Which statement best explains why the population stabilized?

• Interbreeding between members of the population increased mutation rate

• The population size became limited due to factors such as availability of food

• An increase in the chipmunk population caused an increase in the producer population

• A predator species came to the area and occupied the same niche as the chipmunks

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NGSS.MS-LS2-1

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True or false: A niche is the ecological job or role of an organism.

• True

• False

Certain bacteria LIVING in a human's large intestine HELP to produce vitamin K. This relationship is an example of:

• Animal parasitism

• Plant parasitism

• Commensalism

• Mutualism

Which statement best describes some organisms in the food web shown below?

• Minnows and fish are primary consumers

• Algae and floating plants are decomposers

• Aquatic crustaceans are omnivores

• Racoons, fish, and ducks are secondary consumers

Tags

NGSS.MS-LS2-1

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In the diagram below, what does X most likely represent?

• Autotrophs

• Herbivores

• Decomposers

• Carnivores

Tags

NGSS.MS-LS2-3