Question

Identify the odd term in each set and name category to which the remaining three belong.

• A. Sewage
• B. Newspaper
• C. Styrofoam
• D. Hay

Answer 1

The correct option is C

Styrofoam

The correct option is C.

Explanation of the correct option :

1. Styrofoam is made from extended polystyrene, a type of plastic.
2. This material is non-biodegradable as it takes 500 years to degrade.
3. It is dumped in landfills causing hazardous environmental damage to land and wildlife.

Explanation of the incorrect option:

Option A:

1. Sewage is the wastewater generated from homes, factories, and industries containing a huge amount of microbes that naturally decompose the matter.
2. Thus, making it a natural biodegradable pollutant.

Option B:

1. Newspaper can easily be recycled into some usable forms such as paper baskets, packaging material, and other various paper goods.
2. As it is getting decomposed by microbes, it is a biodegradable pollutant.

Option D:

Hay is made from grass, it easily gets decomposed by bacteria and can be used as organic manure, thus, it is a natural biodegradable pollutant.

Final answer: Styrofoam is a non-biodegradable pollutant whereas the other three are biodegradable pollutants.