Question

B. Fill in the blanks.
1- The _ and _ are fibres of animal origin.​

Answer 1

Answer:

The silk and wool are fibres of animal origin

Explanation:

here is your answer all the best

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Answer 2

Answer:

The answer is given below.

Explanation:

The silk and wool are fibres of animal origin.

Because silk is obtained from silk worm and wool is obtained from sheep.