Analisando a equação do segundo grau x2 - 2x +1 = 0, podemos afirmar que ela possui
a) nenhuma solução real
b) uma unica solução real.
c) duas soluções reais.
d) très soluções reais
e) infinitas soluções reais.​

answer: -8.2562234e+13

i believe the answer is the polygon, heptagon.

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.