To be regarded as a sanitary landfill site, all the following conditions must be fulfilled except:
1. Full or partial hydrogeological isolation
2. Refuge should be kept in an open-burning dump
3. Permanent control
4. Planned waste emplacement and covering

Polyblend is:

Non-biodegradable pollutants are created by:
1. Nature
2. Excessive use of resources
3. Humans
4. Natural disasters

The most effective solution to the growing e-waste problem is:
1. dumping in sanitary landfills
2. incineration
3. recycling
4. reduction in the production of electronic appliances

Which of the following material takes the longest time for biodegradation?