Question

27. The materials that change slowly their form and nature are
Used tea leaves
Peels of vegetables
Waste papers
Plants fibres​

Answer 1

Used tea leaves and Peels of vegetables are the materials that change slowly their form and nature slowly.

• Most of the products are subjected to change their shape, colour, size, form or nature over a period of time.
• Used tea leaves change their colour and form over time.
• Peels of vegetables also changes colours as certain microorganisms might be acting upon them and they are no longer a part of the vegetable.

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Answer 2

Explanation:

Used tea leaves and Peels of vegetables