The scale on a map is 1: 20 000. (a) Calculate the actual distance between two points which are 2.7 cm apart on the map. Give your answer in kilometres.

f is the midpoint of

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.  

step-by-step explanation:

where is the question is there is a formula or is there not one