Which of these is a biotic factor in a beach ecosystem

Archaebacteria use for movement. celia flagella pili cell walls

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

When sodium chloride dissolves in water the sodium cholride dissociates into?