All waves consist of some sort of that transmits energy.
medium
force
disturbance
particles

Option (c) is the correct answer.

Explanation:

A wave is defined as the disturbance that propagates through a medium and which helps in transfer of energy from one point to another point.

A wave does not transport matter from one place to another but it only transports energy from one place to another.

Thus, we can conclude that all waves consist of some sort of disturbance that transmits energy.

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.

the inner core.

good luck: )

klicker