✨Tara is mailing some international letters. The total weight of the letters is about 12 ounces. Which sum is about 12?
a.7 1/4 +3 5/6
b.4 1/14+7 2/13
c.4 11/12 +8 9/16
d.2 2/3 + 9 1/4

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.  

i dont know

step-by-step explanation:

answer: 12   they all have at least 28 days

step-by-step explanation: haha

answer: 75°

step-by-step explanation:

∠esk is the supplement of ∠edk, so is 100°. ∠esd = 1/2·arc ed, so is 25°.

since ∠esk = ∠esd + ∠dsk

you have 100° = 25° + ∠dsk . .

fill in known values 75° = ∠dsk . . . . .

subtract 25°

step-by-step explanation: