Population Graphs & Human Impact

Organisms that are unable to make their own food are called...

• autotrophs

• heterotrophs

• homeotrophs

• heterovores

According to the graph, what is causing the deer population to decrease

• They got sick

• The wolf population is decreasing

• The wolf population increased

• They ran out of food

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the name for the maximum amount of rabbits shown in the graph?

• S-curve

• climax point

• carrying capacity

• density dependent limit

Tags

NGSS.MS-LS2-4

Biotic or Abiotic factor that restricts the growth of the population

• carrying capacity

• limiting factor

• abiotic factor

• biotic factor

Predator population lags behind prey population because......

• Increase in predators leads to decrease in prey

• Increase in predators leads to increase in prey

• Increase in predators leads to decrease in producers

• Increase in producers leads to increase in prey

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Based on the graph, which of the following conclusions about the distribution of these two species can be reached?

• Both shrimp species avoid high-salinity habitats because dissolved salt interferes with shrimp reproduction and growth.

• Both shrimp species prefer moderate-salinity habitats over low-salinity habitats because salt facilitates cellular processes required for survival.

• The two shrimp species thrive in water with different salinities because each species has adapted to living in water with certain amounts of salt.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following best describes the transfer of energy in this energy pyramid?

• The amount of energy that flows between organisms within each trophic level remains constant.

• Energy flow increases when organisms move from one trophic level to another within an ecosystem.

• Energy flow is greater between the two upper trophic levels than between the two lower trophic levels.

• The amount of energy that flows from one trophic level to the next is related to the productivity of the lowest trophic level.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Thermoelectric power plants burn fossil fuels to boil water. The steam that is produced is used to spin turbines and generate electricity. Existing thermoelectric power plants are often located next to a water source, such as a river or lake, because large volumes of water are needed to cool the equipment. This water is often released back to the river or lake.

Which of the following has the most potential to be damaged as a result of using a thermoelectric power plant?

• the rate of flow of the water source

• farm crops located near the water source

• areas that are mined near the water source

• organisms of ecosystems in the water source

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Students are investigating the distribution of aquatic life in the Florida Everglades. They learn that the feeding patterns of alligators and bull sharks influence the prey populations in the area. Which of the following describes the most reliable source for this information?

• an article about availability of food sources in the Everglades that was evaluated by other scientists before it was published

• a television documentary produced by a local university that explains threats to the food sources in the Everglades

• an online article from a newspaper relating the food sources in the Everglades to the movements of area wildlife

• a book written by an independent writer describing the existing food sources in the Everglades

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Scientists are using biotechnology to improve the efficiency of cow milk production. Using this technology, a dairy farmer obtains the same amount of milk while using only 90% as many cows.

Which of the following statements predicts the most likely environmental impact of this technology?

• The amount of grain consumed by each cow will decrease.

• The amount of waste produced by each cow will decrease.

• The amount of land required for raising cows will decrease.

• The amount of gas required for transporting cows' milk will decrease.

Tags

NGSS.MS-ESS3-4