1.The management of a large store wishes to add a fenced-in rectangular storage yard of 20,000 square feet, using the building as one of the sides of the yard. Find the minimum amount of fencing that must be used to enclose the remaining 3 sides of theyard.

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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.