A shipment of 30 I-pods is said to contain three defective I-pods. If you pull two I-pods from the shipment at the same time, what is the probability that both are defective?
Is it dependent or independent?

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.  

i think it might be a but you might want a second opinion

where is the graph? need more info