Alamo City Barber College Eutrophication and Organic Compounds Worksheet I have 4 questions.For questions 1,3, 4. I need 4 answers for each question. For e

Alamo City Barber College Eutrophication and Organic Compounds Worksheet I have 4 questions.For questions 1,3, 4. I need 4 answers for each question. For example: Q1: the answers are. 1……. 2……. 3….. 4…..Four different answer for the same question Answer the following questions:
Q1: How does eutrophication occur? What are its effects on DO? And Why?
(10 Marks)
Q2: Calculate the LC50 using linear relationship model from the following data, if you know
that the population is 48 fishes.
(13 Marks)
Concentration Mortality
(ppm) rate
50 12.5% of the
population
100
15 Fishes
150 20 Fishes
200 70.8% of the
population
250 40 Fishes
Q3: Show the relationship between the following terms by using graphs then briefly describe it:
(12 Marks)
1. Organic compounds contain polar groups and solubility in water.
2. Concentration of GHGs in air through the time.
Q4: The following data show the uptake of different heavy metals by Three plants. Make a graph
and then interpret the data. Decide which plant has a better ability to be used as a remedial plant
of heavy metals.
(15 Marks)
Concentration of heavy metals in plant (A, B and
C)in mg/gm.
Species
Concentration
(mg/gm)
Cadmium (Cd)
A. Phragmites australis L 0.53
B. Imperata cylindrica 0.48
C. Sorghum halepense L 0.45
Lead (Pb)
A. Phragmites australis L 0.25
B. Imperata cylindrica 0.20
C. Sorghum halepense L 0.17
Copper (Cu)
A. Phragmites australis L 0.27
B. Imperata cylindrica 0.25
C. Sorghum halepense L 0.23
Zinc (Zn)
A. Phragmites australis L. 0.91
B. Imperata cylindrica 0.66
C. Sorghum halepense L 0.48

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