Shelter A has a capacity of 500 beds and is 90% occupied. Shelter B is 60% occupied. The ratio of the occupancy of Shelter A to Shelter B is 15 : 16. How many beds are in Shelter B?

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.