Grace knows that a movie ticket and snacks will cost $18 per person.
there are 4 people in her family.

which equation will give grace the best estimate of how much money it will cost for her family to go to the movies and buy snacks?

18×4

Step-by-step explanation:

there are 4 people and each person cost $18 so it is 18+18+18+18

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.