Food is prevented from entering the nasal cavity during swallowing by the

Food is prevented from entering the nasal cavity during swallowing by the uvula that is located at the end of the soft palates.

The soft palates are composed of 5 muscles. During swallowing the uvula and the soft palate elevated to block and isolate the nasal cavity from the mouth. When the soft palate rises it creates a vacuum in the mouth which prevents the food from entering the respiratory tract.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

i think it is dna, i'm not totally sure but i think it might be.