Question

Identify 'X', 'Y' and 'Z'.

'X' is a waste which needs to be handled carefully, otherwise it can lead to spread of diseases.

'Y' is a polymer which is widely used and is light in weight. It is a major cause of pollution.

'Z' is a technique used by earthworms to decompose organic matter.

Answer 1

• Biomedical wastes include bandages, needles, gloves, test tubes, body parts, blood samples etc which needs to be handled with a lot of precaution to prevent the spread of diseases.
• Plastics are widely used due to their light weight, durability, ease of moulding etc. Due to toxic substances present in them, it kills soil microbes and hampers the process of decomposition.
• Earthworms produce manure from solid wastes by a technique known as vermicomposting.