Find
1/2+1/6+1/12+1/462=

Hope this help :)

Step-by-step explanation:

6012/12949

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest