If one person takes six hours to paint a house in another person takes 10 hours to paint house how long does it take them to paint the house together

8

Step-by-step explanation: 6+10=16 16/2=8

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.