What is the starting and final form of energy for someone playing the piano

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth’s center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

Which object is most likely represented by a dot?