Ecosystem Interactions

Which two animal populations are compared in the graph?

• Wolves and deer

• Lions and tigers

• Bears and rabbits

• Foxes and mice

According to the graph, what happens to the wolf population over the 10 years?

• It decreases

• It increases

• It stays the same

• It fluctuates randomly

Why might the deer population increase when the wolf population decreases?

• There are fewer predators to hunt the deer

• There is more food for the wolves

• The weather becomes colder

• The forest area decreases

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which factor affects the deer population the most according to the pie chart?

• Disease

• Food Availability

• Weather Conditions

• Predation by Wolves

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What percentage of the deer population is affected by food availability according to the chart?

• 10%

• 20%

• 30%

• 40%

Tags

NGSS.MS-LS2-1

Which factor has the least impact on the deer population as shown in the chart?

• Disease

• Food Availability

• Weather Conditions

• Predation by Wolves

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which two factors together account for 70% of the effects on the deer population?

• Disease and Food Availability

• Predation by Wolves and Food Availability

• Disease and Weather Conditions

• Predation by Wolves and Disease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If food availability increased and its effect dropped to 20%, which factor would then have the second greatest effect on the deer population?

• Disease

• Food Availability

• Weather Conditions

• Predation by Wolves

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following numbers represent a population?

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Where on this graph is "carrying capacity" located?

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4