3/5*-6=18-4x-1 combine like terms that are on the same side of the equation. Which terms can be combined?

answer choices:
18 and -1
3/5x and -4x
-6 and -1

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.  

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where is the picture

step-by-step explanation: