NEETChemistryEnvironmental Chemistry
Why does even a moderate amount of organic matter decomposing in water deplete the dissolved oxygen?
Options
- AOrganic matter releases oxygen.
- BBacteria consume organic matter.
- CBacteria produce organic matter.
- DOrganic matter is not related to dissolved oxygen levels.
Correct answer
B. Bacteria consume organic matter.
Step-by-step solution
Bacteria decompose organic matter in water, and in doing so, they consume dissolved oxygen, leading to a reduction in oxygen levels.