Analyzing Relationships

Type the two values that best complete this analysis sentence:

The largest deer population during the study was about ____ ( 1,100 / 1,300 / 1,500 ) and occurred about __ ( 20 / 30 / 40 ) years into the study.

*Type the 2 answers with the word "and" in between them

The deer population experienced exponential growth from about 14 years to about 40 years into the study.

Which of the following are possible reasons for this growth? Select the two (2) that apply:

• an abundance of plants that the deer eat

• a decrease in plants that the deer eat

• an increase in a population of predators to deer

• a decrease in a population of predators to deer

Which of the following is a possible explanation for why there was a significant decrease in the deer population after a period of exponential growth?

• The deer ate too much of their food in the area, leading to starvation because there wasn't enough food left.

• There were fewer natural predators, allowing the deer population to grow without control.

• New hunting rules were introduced, causing a decrease in the deer population.

• New food sources were introduced, allowing the deer population to grow beyond its natural limits.

Match each change in resource availability on the left with its effect on the right to explain how resource availability affects population size.

• 1) A

  2) B

  3) C

• 1) C

  2) B

  3) A

• 1) A

  2) C

  3) B

• 1) B

  2) A

  3) C

Analyze the graph to determine the population changes that are happening near points A, B, and C.

At which point are BOTH populations increasing?

• A

• B

• C

Analyze the graph to determine the population changes that are happening near points A, B, and C.

At which point is only the Moose population increasing?

• A

• B

• C

Analyze the graph to determine the population changes that are happening near points A, B, and C.

Which point shows where more Wolves are eating more Moose?

• A

• B

• C

If grizzly bears, which also feed on moose, are introduced to the same ecosystem, how might the graph change?

Select all that apply:

• The system will collapse due to too many predators and not enough prey.

• The grizzlies will lower the moose population through predation.

• The wolf population will increase due to competition.

• The moose and wolf populations will still cycle up and down due to their predator-prey interaction.

Match each change in resource availability on the left with its effect on the right to explain how the availability of resources affects organisms.

• 1) A

  2) B

  3) C

• 1) C

  2) B

  3) A

• 1) B

  2) A

  3) C

• 1) A

  2) C

  3) B

Read the information in the image on non-native fish causing trouble in the Mississippi River.

Which of the following solutions would be the best to recommend?

• Ecologists sprout plants distasteful to carp along unvegetated river shoreline.

• Thousands of mussels are relocated from the Great Lakes to the Mississippi River.

• State officials offer free licenses to fishermen that catch more than 100 Asian carp each year.

• Conservationists build protective fences around grasses where native plankton-eating fish lay their eggs.