Allopatric<span> speciation occurs when new species arise as a result of geographic isolation from the ancestral species. It involves an extrinsic barrier to gene exchange and can occur by a number of means including subdivision or peripheral division.</span>
The term is normally applied to a group of between six and nine elements (boron, silicon, germanium, arsenic, antimony, tellurium, and possibly bismuth, polonium, astatine) found near the center of the P-block or main block of the periodic table.
<span> A. a process by which organism keep internal conditions relatively constant despite changes in external conditions. </span>
Answer:
their fins or webbled feet hels them to move and search food to eat .
there's a lagging strand during DNA replication when the DNA synthesis becomes discontinuous.