The answer to this question is Speciation
When biogeographic isolation happen, the population of a certain species will be totally isolated (separated) from other species, which cause that population unable to cross-breeds with other species. This will form a unque and special species because that population will always maintain a certain characteristic unlike other population that are forced to cross-breed
Capillary action causes water to move up
Answer:
D
It helps the reader to understand which layers of the atmosphere are most important. Don't cheat
