New York City has 8.3 million people and an area of 1200 km^2. Tokyo has 13.2 million people and an area of 2200 km^2
Which city has a greater population density?

Step-by-step explanation:

population density of New York=8.3million/1200=8300000/1200\approx 6916/km²

population density of Tokyo=13.2 million/2200=13200000/2200=6600/km²

so New York has greater population density.

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.