Because computers and technology develop and become faster things are going to<span> become substantially easier.</span>
a. Independent variable: <em>TIME
</em>
b. Dependent variable: <em>DISTANCE</em>
Answer:
<em>The distance covered by comet is </em>
Explanation:
Speed is defined as the rate of change of distance with time. It is given by the equation speed= 
Thus distance= 
In this problem it is given that speed of comet= 
time travelled by the comet= 4 hours
Thus distance= 
= 
= 
I think it because of UV rays ultra violet ray which can make their colors different