Bcd is a three-digit number and abcd is a four-digit number. bcd is one-ninth of the value of abcd. what is one possible value for the four-digit number abcd?

step-by-step explanation: i dont

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 am not sure :

step-by-step explanation: