Question

Q.21 Write true or false,
a) Cotton & wool are natural polymers.
b) Metals generally have a low specific gravity.
c) Soil erosion can finally lead to desertification.
d) Adolescence is marked by the onset of puberty.​

Answer 1

Answer:

true,false,true,true

Answer 2

Explanation:

a)True

b)false

c)true

d) true

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