Before a volcanic eruption, seismic activity seems to:

Seismic  activity seem  to  increase in  both  frequency and  and  intensity  before  volcanic  eruption.Volcanic  eruption  is  caused  by  the  magma  when  expelled to  earth  surface.During  this  process  explosive  activity occur  simuteneously at  several  vent  that  is  4  to  6  vent.

p = 0.7, q = 0.3 and p² = 0.49  2pq = 0.42 and q²= 0.09

Explanation:

The alleleic frequency of T = p is 70% which is 70/100= 0.7

The alleleic frequency of t= q is 30% which is 30/100= 0.3.

check: p+q = 1= 0.7 + 0.3 = 1.

The tasters could exist in genotypes as TT (p) or as heterozygous Tt (2pq) while the none tasters exist generally as tt (q).

thus the genotypic frequency of TT (p²) = 0.7² = 0.49

the genotypic frequency of Tt (2pq) = 2 x 0.7 x 0.3 = 0.42

the genotypic frequency of tt (q²) = 0.32 = 0.09

check: p²+ 2pq + q² = 1