Populations and Resources Critical Juncture

A population of tigers lives in Bangladesh. Over 50 years, the size of the tiger population increased. What best explains the increase in the size of the tiger population?

• 
  A lot of tigers were born and none of them died.

• The tiger population is always increasing because no animal eats tigers.

• Fewer tigers were born than died.

• More tigers were born than died.

Tags

NGSS.MS-LS2-4

The firefly population will . . .

• increase..

• decrease

• stay the same.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

The size of the fox population will . . .

• increase

• stay the same

• decrease

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

A population of bluefish lives in the Gulf of Mexico. Over the last 50 years, the size of the bluefish population has decreased. What best explains the decrease in the size of the bluefish population?

• A lot of bluefish died and no new bluefish were born.

• More bluefish were born than died.

• Fewer bluefish were born than died.

• The bluefish population is always decreasing because bluefish are always being eaten.

Tags

NGSS.MS-LS2-4

The size of the wild pig population will . . .

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

The size of the shark population will . . .

• decrease

• increase

• stay the same

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

A large population of ducks lives in an area with a lake. In the last 40 years, the size of the duck population has stayed the same. What must be true about the duck population during the last 40 years?

• The number of ducks that were born was the same as the number of ducks that died.

• No ducks were born and no ducks died.

• Humans started protecting the duck population so they stopped dying.

• The ducks did not have any baby ducks during these years.

The size of the frog population will . .

• increase

• decrease

• stay the same

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

 The size of the bear population will . . .

• stay the same.

• increase

• decrease

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A population of mice lives in the northeastern United States. Over the last 50 years, the size of the mouse population decreased. What best explains the decrease in the size of the mouse population?

• Fewer mice were born than died.

• A lot of mice died and no new mice were born.

• More mice were born than died.

• The mouse population is always decreasing because mice are always being eaten.

Tags

NGSS.MS-LS2-4