Determina el valor de las siguientes razones trigonomètricas sen 38°34'56" Cot 45°34' Sec 39° Tan 12° Csc 16°24' Sen 34.5°

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.  

the answer will be b x² +x-1

step-by-step explanation:

you already gave the answer

step-by-step explanation:

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)