Exercise 1: Data Interpretation Dissolved oxygen is oxygen that is trapped in a

Question

Exercise 1: Data Interpretation

Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of ppm (parts per million). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below.

Table 4: Water Quality vs. Fish Population

Dissolved Oxygen (ppm)

0

2

4

6

8

10

12

14

16

18

Number of Fish Observed

0

1

3

10

12

13

15

10

12

13

What would your experimental approach be to test this hypothesis?

Table 4: Water Quality vs. Fish Population

Dissolved Oxygen (ppm)

0

2

4

6

8

10

12

14

16

18

Number of Fish Observed

0

1

3

10

12

13

15

10

12

13

Explanation / Answer

I would add fish to the water and test the oxygen, and then remove fish and test the oxygen with each (ppm) in counts of 2 (ppm). Also, I would use the same spot, and the same time of day.

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