Answer soon it would mean a lot : )

there are 18 boys and 12 girls in a math class .what is the ratio of girls to total students.
a) 18: 30
b) 12: 30
c) 30: 12
d) 30: 18

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

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.  

your answer would be 12