Which increases speciation

Scientists think that geographic isolation is a common way for the process of specification to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations. ... This may or may not be sufficient to cause specification.

Explanation:

relationships play a major role in a human's emotional and mental wellbeing. healthy relationships with the people around you are even linked to a smaller production of cortisol, a stress hormone.

can you give me more to work here with plzs and you