Eutrophication is the
A) overgrowth of algae in lakes due to the presence of excess phosphate (PO43- ) ions
B) lack of algae in lakes due to the presence of excess phosphate (PO43- ) ions
C) overgrowth of algae in lakes due to the low concentration of phosphate (PO43- ) ions
D) absence of algae in lakes due to the low concentration of phosphate (PO43- ) ions
Correct Answer:
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Q4: Anaerobes are forms of life which
A)can live
Q5: Arrange the zones of the open sea
Q6: At very low dissolved oxygen (DO) levels
Q7: Cold, clear lakes or streams with few
Q8: Discharge of one or more water pollutants
Q10: From a global perspective, the largest contamination
Q11: Groundwater (from wells), unlike surface water, can
Q12: Groundwater (from wells) may contain
A)salt from use
Q13: In a decomposition zone of water,
A)the DO
Q14: Lakes generally evolve naturally over time in
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