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Your Name: ____________________________________ |
Fall 2010 |
A population of purple rabbits lives on the island of Zulatop. The rabbits have a net growth rate of 0.09 yr-1. At the present time there are 176 rabbits on the island. What is the predicted number of rabbits 5, 10, and 20 years from now? Use the simple exponential growth equation to calculate the number of rabbits. In addition, make a plot of purple rabbit population versus time for a period from 0 to 25 years.
Recalculate the number of purple rabbits if the carrying capacity is 386 and you use the logistic equation. Assume the number of rabbits at the present time and use the same intervals. In addition, make a plot of purple rabbit population versus time for a period from 0 to 25 years.
The concentration of diazinon has been measured to be 23.3 µg/L in Lake Pekko. The biocentration factor for diazinon is 337 L/kg. What is the expected concentration of diazinon in fish living in Lake Pekko?
The bioconcentration factor for bis(2-ethylhexyl)phthalate, a commonly used plasticizer, in the organism Daphnia is 5200 L/kg. If the concentration of bis(2-ethylhexyl)phthalate in a lake is 3.6 µg/L, estimate the concentration of bis(2-ethylhexyl)phthalate in Daphnia in units of µg/kg.
Assigned: 18 Oct 10
Due: 27 Oct 10
Your Name: ____________________________________
Answer Page
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Problem #
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1 |
5 yr |
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Rabbits |
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10 yr |
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Rabbits |
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20 yr |
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Rabbits |
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plot |
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1 |
5 yr |
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Rabbits |
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10 yr |
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Rabbits |
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20 yr |
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Rabbits |
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plot |
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3 |
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µg/kg |
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4 |
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µg/kg |