A Emilio le sobran 2/3 de una barra de chocolate y le da a su amigo 1/5 de lo que le queda. Si al pedazo de chocolate que le resta a Emilio después de haberle invitado a su amigo le quiere sacar 3/4, ?que fraccionamiento de la barra de chocolate representan estos 3/4?

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.  

positive

step-by-step explanation:

the quadrant is facing upwards