Which wastes remain in water permanently without degradation?

Which wastes remain in water permanently without degradation?

• A. Slowly Degradable Wastes
• B. Reservoirs
• C. Non-biodegradable Wastes
• D. UV Exposure for Water Purification

Answer: (C)

Wastes that stay in water indefinitely are those that resist biological breakdown. Non-biodegradable wastes cannot be broken down by natural microorganisms, so they persist in the aquatic environment for a very long time, effectively indefinitely in many cases. This permanence is what sets them apart from other types of wastes. For comparison, slowly degradable wastes do break down, just at a gradual pace, so they won’t remain forever. A reservoir is just a body of water, not a waste. UV exposure for water purification is a treatment method used to destroy contaminants, not a waste.

Wastes that stay in water indefinitely are those that resist biological breakdown. Non-biodegradable wastes cannot be broken down by natural microorganisms, so they persist in the aquatic environment for a very long time, effectively indefinitely in many cases. This permanence is what sets them apart from other types of wastes.

For comparison, slowly degradable wastes do break down, just at a gradual pace, so they won’t remain forever. A reservoir is just a body of water, not a waste. UV exposure for water purification is a treatment method used to destroy contaminants, not a waste.