#08 Independent Practice: Analyzing Changes to Food Webs

If mice were removed from this ecosystem, which of the following would also be expected to occur?

• A decrease in the cricket population

• A decrease in the corn population

• A decrease in the hawk population

• A decrease in the moth population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following would cause a decline in the lizard population?

• A decrease in the cricket population

• An increase in the corn population

• A decrease in the mice population

• An increase in the moth population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A decrease in which of the following populations would have the greatest effect on the rest of the organisms in the ecosystem?

• Hawks

• Corn

• Crickets

• Birds

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following are the producers in this ecosystem?

• Humpback whales

• Sea turtles

• Phytoplankton

• Sharks

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-4

Which of the following could be a long-term result of reducing the herring population in this ecosystem?

• An increase in the puffin population

• A decrease in the shark population

• An increase in the codfish population

• A decrease in the humpback whale population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following would be a result of increasing the krill population in this ecosystem?

• A reduction in the jellyfish population

• An increase in the jellyfish population

• An decrease in the codfish population

• An increase in the phytoplankton population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Over hunting of humpback whales would result in which of the following changes to this ecosystem?

• A decrease in the puffin population

• An increase in the phytoplankton population

• An increase in the population of krill

• Increased competition between top predators.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A reduction in the population of mice in this food web could cause which of the following changes to occur?

• A decrease in the grass population

• An increase in the snake population

• An increase in the grasshopper population

• A decrease in the grain population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An ecologist observes that the frog population in this ecosystem is increasing. Which change below is most likely to cause an increase in the number of frogs?

• An increase in the mice population

• An increase in the rabbit population

• A decrease in the grasshopper population

• A decrease in the snake population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Insecticides are used by a farmer to decrease the grasshopper population in this area. This reduction in the grasshopper population would also cause which set of change?

• The grain population to decrease and the frog population to decrease

• The grain population to decrease and the frog population to increase

• The grain population to increase and the frog population to increase

• The grain population to increase and the frog population decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4