Mary drives nine miles north and six miles east, while benjamin drives three miles south and 7 miles west. how far does mary live from benjamin

answer: for each 3 girls there is 2 boys . 3: 2

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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.