Answer: Option B.
Geographic separation.
Explanation:
It is geographic separation that is common to both of them because
Sympatric speciation to occur when certain populations of species isolate reproductively from the the main populations because they can not longer interbreed with each other and they inhabit the same geographical location.
Allopatric speciation occur when two populations of the same species separate from each other geographically which can be as a result of one group of population move to another geographical location.
The water beads up on synthetic fabric comparable to polyester but impasses to cotton because polyester is nonpolar while cotton is polar. In addition, nonpolar covalent bonds are a kind of chemical bond where two atoms portion a pair of electrons with each other while polar covalent bonding is a type of chemical bond where a pair of electrons is unevenly shared among two atoms.
Cellular respiration and photosynthesis
He is right, it’s A. loss of Biodiversity.
Approximately 4.5 billion years ago