<span> Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types.</span>
<span>B. 0 - 12 hours.</span> There are four phases in the continuity implementation. Phase 1 is readiness and preparedness; Phase 2 activation and relocation, which acceptable time period is between 0-12 hours; Phase 3 - continuity operations, acceptable time period is between 12 hrs to 30 days and Phase 4 - reconstruction
