A and B are two similar solids. 15 cm
10 cm
1月
The volume of A is 400 cm.
Work out the volume of 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.  

it would open into a square depending on the type of envelope i’m not sure about the second part