Multiple choice

Which one of the following is being consumed by aerobic bacteria?

  1. Cans and grease

  2. Human excreta

  3. Cooking oils

  4. Paints
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aerobic bacteria require oxygen and consume organic matter during wastewater treatment. Human excreta is rich in organic material that serves as a food source for these bacteria, which break it down as part of the biological treatment process. Inorganic materials like cans, paints, and oils are not consumed by aerobic bacteria.

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