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- Explain the metabolic changes found in denitrifiers, compared to microorganisms doing aerobic respiration, and the consequence of denitrification for agricultural soils.Explain the metabolic changes found in denitrifiers, compared to microorganisms doing aerobic respiration5. Soil X’s pH is measured before and after urea application, it has been noted that after the application of urea, pH decrease, which of the following processes is most likely responsible for the decrease in soil pH? A. Nitrogen fixation B. Annamox C. Nitrification D. Denitrification
- b) Explain structured and unstructured model of microbial growth.1.The formation of a solution is an example of a(n): a, Isothermic process b, Heterogenous process c, Spontaneous process d, Homogenous process e, Nonspontaneous process 2,Solution formation is___________ Group of answer choices a, favored, but not guaranteed by endothermic dissolution processes. b, guaranteed by exothermic dissolution processes c, guaranteed by endothermic dissolution processes. d, favored, but not guaranteed by exothermic dissolution processes.Explain why high concentration of suger, salt and acid do not support microbial growth, only it have to be in neutral level?
- . Compared with a basic solution at pH 9, the same volumeof an acidic solution at pH 4 has _________ times as manyhydrogen ions (H+).Write T on the blank provided if the statement is correct. If it is false,underline and replace the word(s) with the word(s) that will make the statement true. ___________________ Potential acidity is the sum of hydrogen ions in soil solution site.___________________ Actual acidity is the sum of hydrogen ions that may contribute to solubilityof ions in the soil solution site.___________________ Ammonium sulfate is a fertilizer that strongly acidifies soil than Ureafertilizer.___________________ Ca, Mg and K have high availability at acidic pH.___________________ Fe and Al have high solubility at basic/alkaline pH.___________________ Soils containing large amounts of 2:1 type clay are less buffered than soilswith 1:1 type of clay.16. Which of the following statements describe the decomposition of organic materials as time goes on? a. Faster rate of decomposition is observed in the first two weeks than in the weeks thereafter. b. More complex organic matter is decomposed faster than the simpler molecules c. Decomposing organic matter gains water as decomposition proceeds. d. Generalist decomposers dominate over specialist decomposers as decomposition proceeds.