Question

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

Sewage, Newspaper, Styrofoam, Hay

Answer 1

Sewage:

1. Sewage is wastewater created by households and industries which is high in bacteria.
2. Hence sewage is biodegradable.

Newspaper:

Newspaper is biodegradable since it is made of plant components, and the majority of plant components are biodegradable.

Styrofoam:

1. Styrofoam is composed of expanded polystyrene (a type of plastic).
2. The material itself is not biodegradable, so it takes several years before it begins to decompose.

Hay:

1. Hay is a grass-based product that is biodegradable.
2. Hay, like other organic stuff, will decompose in the environment.
3. Hay's biodegradability has made it a competitive manufacturing choice.

The odd term is Styrofoam; Category: Styrofoam is non-biodegradable, while the other terms are biodegradable.