Populations and Resources: Level 3

In Australia, both opossums and foxes eat rats. The sizes of the populations have been stable for the last 12 years, but recently the size of the opossum population increased. What will likely happen to the fox population?

The size of the fox population will . . .

• increase because there will be more rats to make energy.

• decrease because the opossum population is taking more energy storage molecules from the rats.

• stay the same because there are still energy storage molecules available.

• decrease because the opossum population is using the fox population for energy storage molecules.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-3

In North America, both bears and eagles eat trout. The sizes of the populations have been stable for the last 9 years, but recently the size of the eagle population decreased. What will likely happen to the bear population?

The size of the bear population will . . .

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What two organisms are competing for the same resource population?

• The Weebugs and Clawcats are competing for Scalebeaks

• The Scalebeaks and the Stingwings are competing for the Clawcats

• Weebugs and Furbils are competing for the Weebugs

• The Stingwings and Furbils are competing for the weebugs

Tags

NGSS.MS-LS2-1

If the furbil population increases the stingwings will likely ______________.

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

If the furbil population decreases the stingwings will likely ______________.

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What will happen to the hyena population if the lion population increases?

• Increase

• Decrease

• Stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What will happen to the hyena population if the lion population decreases?

• Increase

• Decrease

• Stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What will happen to the walleye pollock population if the moon jelly population decreases?

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-3

What will happen to the moon jelly population if the algae increases?

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What will happen to the moon jelly population if the orca increases?

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2