Not all the work done to pull the bowstring back is changed into elastic potential energy. Why?

Shooting an arrow requires different types of energy. The archer supplies the initial energy by drawing the bow. The limbs of the bow provide elastic potential energy as they are pulled back by the bow string. The energy that the arrow has is called kinetic energy – the energy of motion.

Answer it orbits high above earth to gain clearer images of light, it magnifies images relative to the human eye, it records most of the universe as it was in the past, not as it is now;