Explain how to simplify 3y - 4 - 5y

-2y - 4

Step-by-step explanation:

'3y' and '-5y' are like terms, so we combine them.

Hope this helps.

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.  

4

step-by-step explanation: