In the phosphorous cycle,inorganic phosphates are converted to _____,a water-soluble nutrient used by both plants and microorganisms.
A) phosphorous
B) hydrophosphates
C) orthophosphate
D) betaphosphate
Correct Answer:
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Q20: Which of the following statements about ecology
Q21: What results from the biological oxygen demand
Q22: Cytophaga,found in soil,is characterized by _.
A)being a
Q23: Molds in soil serve to:
A)aid in decomposition
B)aid
Q24: Which of the following symptoms is not
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
Q30: The primary producers in the ocean are:
A)bacteria
B)viruses
C)phytoplankton
D)two
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