Chapter 13. Critical Analysis Question

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You must read each slide, and complete any questions on the slide, in sequence.

Critical Analysis Question:

Evaluate the evidence that smelting activity near Sudbury, Canada, impacted terrestrial and aquatic ecosystems.

To formulate your answer, first consider these additional thought questions:

1.

What is smelting?
A. It is process of extracting metals from ore using heat and melting.
B. It is a process that captures impurities from power plant emissions, decreasing rates of acid rain.
C. It is a process that removes sulfur and other impurities from coal.
D. It is a process used to extract energy directly from metals.

Correct

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Examine the graph below. Which of the following statements best describes the information depicted in the graph? Note: A “quadrat” in this study was a 2-by-20 meter plot in which plant species were counted.

2.

A. The greater the distance from a smelter, the higher the plant species diversity, until a plateau of species diversity was observed around 30 km or more from the smelter.
B. The greater the distance from a smelter, the lower the plant species diversity, until a plateau of species diversity was observed around 30 km or more from the smelter.
C. Plant species diversity does not show any relationship with the distance from a smelter.

Correct

Incorrect

2. Examine the graph below. Which of the following statements best describes the information depicted in the graph? Note: A “quadrat” in this study was a 2-by-20 meter plot in which plant species were counted.

Examine the graph below. Understand that smelting activities commonly release large amounts of sulfur dioxide. Which of the following statements best describes the information depicted in the graph?

3.

A. The closer the distance is to a smelter the lower the concentrations of lake sulfate and the lower the aquatic plant diversity.
B. The closer the distance is to a smelter, the higher the concentrations of lake sulfate and the higher the aquatic plant diversity.
C. The higher the lake’s concentration of sulfate is, the lower the aquatic plant diversity.
D. The higher the lake’s concentration of sulfate is, the higher the aquatic plant diversity.

Correct

Incorrect

3. Examine the graph below. Understand that smelting activities commonly release large amounts of sulfur dioxide. Which of the following statements best describes the information depicted in the graph?
4.

Based on what you have learned from examining the graphs above, describe the relationship you can infer between smelting activity and impacts on terrestrial and aquatic ecosystems.
A. The emissions from smelters stimulate terrestrial and aquatic plant growth and survivorship.
B. The emissions from smelters impact aquatic ecosystems but not terrestrial ecosystems.
C. The emissions from smelters decease terrestrial and aquatic plant species diversity, demonstrating negative impacts on the primary producers in both ecosystems.

Correct

Incorrect

5.

Now we return to the original Critical Analysis Question: Evaluate the evidence that smelting activity near Sudbury, Canada, impacted terrestrial and aquatic ecosystems.

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Chapter 13. Critical Analysis Question

Introduction

Questions 1 & 2

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2.

Questions 3 & 4

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Critical Analysis Question

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13.1 Activity Completed!