Solving Exponential Equations (lacking a common base)
2^s=19

s = 4.248

Step-by-step explanation:

lg both sides

lg(2^s) = lg19

slg2 = lg19

s = lg19/lg2

s = 4.247927513

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.  

answer: 40392

step-by-step explanation:

10098 x 4 = 40392