Question

In a period, density first__________ then__________and in grp it________down the grp
a)Decreases, increases, remains constant
(C) Increases, remains constant, increases
(B) Increases, decreases, decreases
(D) Increases, decreases, increases​

Answer 1

Answer:

increases,decreases,remain constant

Answer 2

$\huge\bf{Answer:-}$

In a period, density first Increase then decrease and in grp it remains constant down the grp.