CLASS 7 SCIENCE CHAPTER-3
EXERCISE-1 This chapter 3 comprises of different topics. Like – 1.Fibres 2.Types of fibres 3.Silk 4.Wool 5. Sources of wool How to process wool fibre? 1. Fibres – Fine, long, filaments or continuous threads are acquired for the animals and plants. There are 2 types of fibre. They are – Plant fibre and Animal fibre. 2. …