When reduced to its lowest terms, the fraction 12/16 would read as

3/4

Step-by-step explanation:find the largest common factor that can reduce the numbers. In this case it’s 4. 4x3=12, so we know the numerator can simplify to 3, and 4x4= 16. Therefore we would get a simplified answer of 3/4

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.  

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)