Answer:
When total diversity in the neutral model became small (similar to the number of continents), a significant increase in diversity is observed as a result of continental drift. This is because in the extreme case of low speciation rate, after a sufficiently long period of time, a fragmented set of continents necessarily maintains a separate species in each, whereas a single supercontinent would only contain one species. As the speciation rate decreases still further, the system ultimately converges to a state where there is still only one global species, because the speciation event bringing it into existence is pushed back to a time when the continents were still connected. Explanation:
The best answer for this question would be:
Geography and climate determined what kind of crops would be grown, leading to differing structures for economies and settlements.
The settlement of the different colonies were determined by the chosen environment that they were going to live at.
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Answer:
The latter was organized in China into families and clans strategically ... Fearing repetition of the centrifugal power of regional clans and military leaders ... its primary goal of selection, it is missing the point to evaluate the examination system, as ... The civil service examinations, in turn, engendered a national school system.
Explanation:
