The primary producers in the ocean are:
A) bacteria
B) viruses
C) phytoplankton
D) two of these choices
Correct Answer:
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Q25: In the phosphorous cycle,inorganic phosphates are converted
Q26: In testing for water purity,the presumptive test
Q27: Phytoplankton include:
A)cyanobacterteria
B)diatoms
C)dinoflagellates
D)all of these choices
Q28: Which of the following is used to
Q29: Eutrophication leads to:
A)a decrease in oxygen
B)plants become
Q31: Which is the order of purification procedures
Q32: Which of the following statements about biogeochemical
Q33: Soil contains human pathogens,for instance _.
A)Clostridium tetani
B)Bacillus
Q34: How do the ONPG and MUG test
Q35: Which of the following statements about soil
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