Answer:
the sun or Me not sure but one of them has to be ...
<span>A battery is the power source for DC. (C)
You COULD use a battery to get AC, but you'd need some electronics,
to take the DC from the battery and use it to generate AC.</span>
Answer:Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder with your eyes directly level with the liquid. The liquid will tend to curve downward. This curve is called the meniscus. Always read the measurement at the bottom of the meniscus.
Explanation: