Which Interaction does not take place due to field forces?
OA. Interaction between protons and electrons
OB.
Interaction between a ball in flight and the earth below it
C.
interaction between Mars and the Sun
OD. interaction between a pen and paper while you write

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

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

Write down two additional questions about earth's magnetic field that will make your presentation more informative.