Simple machines can be assembled quickly and repaired easily.
Answer:
a human that walks on earth
Explanation:
Answer:
The magnetic stripes might reverse direction. The deep-ocean trench might become deeper.
Explanation:
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The molecules of the perfume diffuse through the room at a certain critical concentration and later are detected by our noses.
Answer:
500 hours
Explanation:
The sum of total hours over its lifetime will be given by

Where T is total time, r is rate in decimal and To is the original charge hours. Substituting the original charge hours with 5 hours and rate as 0.99 then the time will be

Therefore, the time is equivalent to 500 hours