Question
Question: Organic matter is considered as a major source of water pollution caused by wastes of food, animal a...
Organic matter is considered as a major source of water pollution caused by wastes of food, animal and human excreta, garbage etc. the excess of organic matter in water causes a threat to aquatic life because
A
The space available to aquatic life because
B
Microorganism consume dissolved oxygen to decompose organic matter
C
Organic matter is swallowed by small animals
D
Decomposition of organic matter increase the temperature of water.
Answer
Microorganism consume dissolved oxygen to decompose organic matter
Explanation
Solution
: If a lot of organic matter is decomposed, a lot of dissolved oxygen is consumed by microorganisms hence dissolved oxygen is no longer available for aquatic life.