The part used for chewing food

Molars Molars are also used for chewing and grinding food. Primary molars, also known as deciduous molars

Explanation:

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The part used for chewing food is mastication muscle

Explanation:

The mastication muscle is the main muscle used for chewing

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answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.