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Farmed salmon are often infested with sea lice - Scottish Highers Biology - Question 22 - 2022
Question 22
Farmed salmon are often infested with sea lice. The sea lice can be controlled by adding a pesticide to the water. The concentration of pesticide in the water and t... show full transcript
Worked Solution & Example Answer:Farmed salmon are often infested with sea lice - Scottish Highers Biology - Question 22 - 2022
Step 1
What was the average number of sea lice per salmon when the concentration of pesticide was 1.7 µg/l?
Answer
To find the average number of sea lice per salmon when the concentration of pesticide was 1.7 µg/l, we refer to the graph provided.
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Locate the concentration of 1.7 µg/l on the y-axis, which represents the concentration of pesticide in water.
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Draw a horizontal line from this point until it intersects with the graph line representing the average number of sea lice per salmon.
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At the point of intersection, follow this vertical line down to the x-axis to determine the corresponding average number of sea lice per salmon.
After following the steps outlined above, we find that the average number of sea lice per salmon is approximately 14.