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Many Planktonic Organisms Have Excesses of Ammonium, Sodium, and Chloride

Question 17

Multiple Choice

Many planktonic organisms have excesses of ammonium, sodium, and chloride relative to sea water because


A) They must regulate ionic concentrations in estuaries
B) They evolved in the deep sea and retain the chemistry of the deep sea
C) These excesses are substitutions of ions of lower density, which counteracts sinking
D) All of the above

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