Ojos del Salado is the highest mountain in Chile, with a peak at about 6,900 meters above sea level.
• The Atacama Trench, just off the coast of Peru and Chile, is about 8,100
meters below sea level at it's lowest point.
Is the elevation HALFWAY between the peak of the mountain and the
Trench ABOVE OR BELOW sea level? Explain your answer without
calculating the exact value

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.  

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step-by-step explanation: