1. You notice a ""rotten egg"" smell coming from the black goo in the iron drain pipe in your kitchen. You could get rid of the smell by adding which of the following? A. Sulfate reducers B. Purple sulfur bacteria C. Methanogenic bacteria D. Clostridial spores E. Sulfur oxidizing bacteria

The correct answer is letter B

Designation of the group of bacteria, not related to each other, that use sulfur, sulfides or sulfates in their metabolism. The photoautotrophic, green or red anaerobic bacteria use hydrogen sulfide as a source of electrons for photosynthesis, producing sulfur as a final product. Sulfur oxidizing cheiautotrophic bacteria, or their compounds, produce sulfates as the final product. The sulphate-reducing heterotrophic anaerobic bacteria need sulphates for their breathing, obtaining energy by reducing sulfur or hydrogen sulphide.

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.