It is neccessary to use satellites for long distance TV transmission. Why ?

This is best mean of transport for long distances.

Aquatic organisms-adapted the ability to travel long distances

For circuits used for transporting electric power, a low power factor implies large power loss in transmission. Explain.

The height of a transmission antenna is 49m and that of the receiving antenna is 64m. What should be the maximum distance between them for line of sight transmission ?