Unit 1 Review- Ecosystems

Farmers in a suburban coastal town started using no-till agriculture, a practice that reduces soil erosion from their farmland. Use the image to determine which of the following long-term effects no-till agriculture will have on the ecosystem surrounding the farmland.

• There will be an increased need for fertilizer on farmlands

• There will be less algal growth in the nearby ocean

• There will be less phosphorus pollution in the atmosphere

• There will be an increased deposition of phosphorus-rich sediments

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NGSS.MS-ESS3-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

The energy available to consumers determined by subtracting the energy used by plants from the total energy transformed by the process of photosynthesis.

• Primary productivity

• Gross primary productivity

• Net primary productivity

• Cellular respiration

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Energy is transferred along food chains from one stage to the next. Which statement best explains how the energy is transferred?

• If a primary consumer stores 100kcal of energy, then a secondary consumer that feeds on the primary consumer will also have 100kcal of energy available

• If a primary producer stores 10,000 kcal of energy, then a tertiary consumer will have 10kcal of energy available

• If a primary producer stores 100,000 kcal of energy, then a secondary consumer will have 10,000 kcal of energy available

• If a secondary consumer stores 500 kcal of energy, then a tertiary consumer that feeds on the secondary consumer will have 5,000 kcal of energy available

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows a simplified nitrogen cycle. Which of the following processes is illustrated by the downward arrows form the atmosphere that show the conversion of nitrogen gas into usable forms available to producers?

• Nitrogen assimilation

• Nitrogen fixation

• Photosynthesis

• Weathering

Tags

NGSS.MS-LS2-3

Identify a process shown in the diagram that sequesters carbon from the atmosphere for a geological period of time.

• Decomposition

• Sedimentation into calcium carbonate

• Lithifiation into limestone

• Combustion

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NGSS.HS-ESS2-6

NGSS.HS-LS2-5

Scientists are interested in researching how carbon dioxide int he oceans is affecting its pH. They design a laboratory experiment in which they inject different concentrations of carbon dioxide into saltwater tanks containing calcium carbonate shells. The tanks were kept at the same, constant temperature. After several days, the scientists measured the pH of the saltwater tanks and observed its effects on the calcium carbonate shells. Identify the independent variable in this experiment.

• The amount of carbon dioxide in the water

• the pH of the water

• the effect on the shells

• the temperature of the tanks

Tags

NGSS.HS-ESS2-5

Describe the effect of water temperature on the amount of dissolved gases in the water.

• As water temperature increases, so does DO

• As water temperature increases, DO decreases

• Changes in water temperature and DO are directly correlated

• Water temperature and DO are not related

A local citizen science group is monitoring the water quality of a nearby lake. They gather water samples once a week on Wednesday between the hours of 7am and 9am from the same location. One day in August, they were unable to sample within the time frame and collected the sample at 3pm. How might the modification to the sampling procedure affect the results?

• Water sampled later in the day may be warmer and therefore have lower dissolved oxygen levels

• Water sampled later in the day may be warmer and therefore have higher dissolved oxygen levels

• Water sampled later in the day may have decreased macroinvertebrate respiration and therefore lower dissolved oxygen levels.

• Water sampled later in the day may have increased macroinvertebrate respiration and therefore higher dissolved oxygen levels

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

The graph shows the relative solar energy received at local noon each day of the year at two different locations. Location 1 is most likely located in which of the following terrestrial biomes?

• Taiga

• Tundra

• Tropical Rainforest

• temperate grassland

Tags

NGSS.MS-ESS2-6

Country with the largest area of Boreal forests

• Australia

• Brazil

• Russia

• United States of America