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Ans 2:
Class : Class 10
Sebaceous glands. The secretions from this gland increases during puberty, causing pimples and acne.
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Class : Class 8
Ans:D
In first two boxes all the shapes are formed by only straight lines or these are of four and three sided so the answer will be option (D).
(A) 20
(B) 22 (C) 24
(D) 25