What happens to the inequality sign when the problem is divided by a -1

It changes completely, for instance if it's -4x < -5, when all of this is divided by a -1, it becomes 4x > 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.  

5+2x=a

asdasdsaadsaddsasds