Question: Which of the following pollutants is not biodegradable?
A Sewage
B Garbage
C DDT
D Livestock waste
Answer: DDT
| Aspect | Biodegradable Pollutants | Non-Biodegradable Pollutants |
| Decomposition | Naturally broken down by biological processes over time. | Do not break down easily through natural processes. |
| Examples | · Domestic wastes (garbage)
· Urine · Fecal matter · Sewage waste · Agriculture residues · Paper · Wood · Cloth · Cattle dung · Animal bones · Leather · Wool · Plants |
· DDT
· Plastics (including polythene bags) · Insecticides · Pesticides · Mercury · Lead · Arsenic · Metal articles (e.g., aluminum cans) Synthetic fibers · Glass objects · Iron products · Silver foils |
| Environmental Impact | Often less persistent and may have a lower long-term impact on ecosystems. | Can persist in the environment for extended periods, leading to long-term harm. |
| Management | May require less intensive cleanup efforts as they naturally degrade over time. | Often require complex and costly cleanup methods |
| Effects on Ecosystems | Can be incorporated into natural nutrient cycles and have less disruptive effects on ecosystems. | Can accumulate in ecosystems, leading to toxicity and disruptions in food chains. |
| Recycling | Can often be recycled or composted to minimize their environmental impact. | Recycling options may be limited and reduction in use is a primary strategy. |
| Environmental Regulations | Regulations may focus on managing disposal and encouraging biodegradable alternatives. | Regulations often focus on minimizing use, proper disposal and treatment of non-biodegradable waste. |