To properly read a topography map, the lines need to stay constant to keep measurments easy and as close to exact as possible. Plus it also illustrates the shape of the land surface for every increase/decrease.
Electricity is the essential need for everyday life.
Electricity problems are caused due to failures and errors in the electricity network, these might include man power error at the source, circuit failure, wires burn out etc. apart from these certain natural calamities also can harm the power supply, which include storms which harm the wires transmitting the electricity, heavy rain which causes damage to the electricity poles .
Solar flares and grid failures also lead to electricity failures.
The correct answer is (c.) outer. The moon's average density is about the as the outer layer of the Earth. The average density of moon is about 3.34 g/cm<span>3 and the earth's outermost layer is almost similar to it. </span>