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Scientists are studying how water clarity affects the number of fish species in a large lake. They focus on two areas in the lake, one containing clear water and the other containing cloudy water resulting from human activities surrounding a portion of the lake. The number of fish species in each area is shown in the graph. A student claims that clear water sustains a larger number of fish species compared to cloudy water. Which evidence best supports the student’s claim?

• At depths between 10 to 20 meters, the number of fish species decreases in cloudy water.

• At all depths, the number of fish species is higher in the clear water compared to the cloudy water.

• As depth increases, the number of fish species in clear water decreases faster than the number in cloudy water.

• As depth increases from 40 to 60 meters, the number of fish species remains constant for both clear and cloudy water.

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NGSS.HS-LS2-2

NGSS.HS-LS2-6

Group behavior in some animal species can increase the likelihood of survival for individuals. Generally, group behavior benefits all members of the group; however, a particular behavior may increase the risk for some individuals in the group. Select two behaviors that are most likely to reduce the likelihood of survival for the individual but that will increase survival of the group.

• A wolf joins a pack of wolves to hunt for prey.

• A honey bee defends the hive containing a queen.

• A fish swims in a school which confuses a predator.

• A ground squirrel makes a loud call alerting the group to the presence of a hawk.

• A wildebeest joins a group of other wildebeests to avoid attacks by a predator in open areas.

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NGSS.HS-LS2-8

Students are studying cellular respiration. They write the net reaction of cellular respiration as shown in this diagram. Select words from the lists to complete the sentence about cellular respiration.

During cellular respiration, energy is ​ (a)   when chemical bonds of molecules are broken, and new ​ ​ (b)   formed.

• created
• destroyed
• molecules
• organelles
• transferred
• atoms

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NGSS.HS-LS1-7

NGSS.HS-LS2-5

A researcher is investigating population growth of an organism under two different sets of environmental conditions. The following data are collected. Which statement best explains the difference in growth between the two populations?

• Environment 1 is warmer than environment 2. This leads to a higher metabolic rate in the organisms in environment 1.

• There is a competitor in environment 2 that is not present in environment 1. This lowers the carrying capacity of environment 2.

• Environment 2 contains smaller organisms than environment 1. This means fewer organisms can fit into environment 2.

• The organisms in environment 1 reproduce at a younger age. This causes the population in environment 1 to grow faster than that of environment 2.

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Complete the table by selecting the process each listed feature is most directly associated with.

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NGSS.HS-LS1-5

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Based on the graph, the rate of photosynthesis between points X and Y depends mostly on the

• CO2 concentration because at point Y there is a greater CO2 concentration than at point X.

• CO2 concentration because the maximum rate of photosynthesis occurs when the CO2 concentration is greater than what it is at point Y.

• light intensity because the rate of photosynthesis decreases as the light intensity increases.

• light intensity because the rate of photosynthesis is greater at point Y compared to point X regardless of the CO2 concentration.

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NGSS.HS-LS2-4

NGSS.HS-LS2-5

Based on this information, select the probabilities that correctly complete the statements. A child born to a mother with type AB blood and a father who is heterozygous for type A blood has a chance of having type A blood. The probability that a child born to the couple is homozygous for type A blood is.

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NGSS.HS-LS3-3

Which question about mitosis would most likely cause the student to revise this claim?

• Do sister chromatids segregate equally to each daughter cell?

• Do homologous chromosomes align on the metaphase plate?

• Do daughter cells contain the chromosomes in the nucleus?

• Do genes move from one chromosome to another?

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NGSS.HS-LS1-4

Sea otters were reintroduced to Vancouver Island, Canada, in 1969. Since then, their population has increased in size. Scientists monitored the sea otter population of Vancouver Island from 1985 to 2019. The data are shown in the graph. Based on this information, the sea otter population most likely reached its carrying capacity.

• before 1988.

• between 1992 and 1994.

• between 1997 and 2000.

• after 2006.

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NGSS.HS-LS2-1

Select one check box in each row that best predicts the impact of the invasive parasitic flies when they were first observed in 1991.

• Cricket population size: Expected to increase

• Disruption to Kauai’s ecosystem: Expected to increase

• Cricket population size: Expected to decrease

• Disruption to Kauai’s ecosystem: Expected to decrease

• Cricket mating success: Expected to decrease

Tags

NGSS.HS-LS2-1

NGSS.HS-LS2-6

NGSS.HS-LS4-5