A. Is the correct answer :)
A slow
b very viscous (viscosity is the thickness)
c no
d effusive eruption SHIELD VOLCANO
The correct answer to this question is <span>The allele for short pea plants is masked during the F1 generation, but it is still present in the genotype.</span>
I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)
