Question

hello.............friends

Answer 1

$\mathfrak{hey\: mate}$

◆here's your answer◆

Vladimir Keilis-Borok was doing research in the area of

$\bf{(a) \:seismic\: waves-\:tremors}$

$\huge\red{Thanks!!!}$

Answer 2

Answer: (A) seaismic waves - tremors

Explanation:

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