Changes to Populations in 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-LS2-3

NGSS.MS-LS2-4

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

• hawks

• corn

• crickets

• birds

Tags

NGSS.MS-LS2-1

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-LS2-3

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 humpback whale population

• an increase in the jellyfish population

• a decrease in the codfish population

• an increase in the phytoplankton population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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

• a decrease in the puffin population

• an increase in the population of krill

• an increase in the phytoplankton population

• increased competition between top predators

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

A decrease in the population of sharks due to poaching would cause which of the following factors to immediately increase for the puffins?

• Predation

• Competition

• Parasitism

• Adaptation

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-LS2-2

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 changes?

• 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 to decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4