Question

i) Classify the following substances – wood, paper, plastic and grass.
ii) Give a detailed account of your classification.

Answer 1

Wood, paper, and grasses are the bio-degradable substances while the plastic is the non-bio-degradable substances.

Bio-degradable substances are those which are broken down by the biological process of biological process of microbial or biological action.

Wood, paper, and grass are broken down due to the actions.

Non-bio-degradable substances are those which are not broken down by the biological process of biological process of microbial or biological action.

Plastic is not broken down due to the actions.