The flow of energy starts in in you arms. You put your hands together, and use your arms to move your hands back and forth, this is kinetic energy. Your hands rubbing together causes the molecules to bump into each other, this is friction. As the molecules bump into each other they begin to move faster, and the fast movements of the molecules is what creates heat.
Answer:
skeletal muscle fibres.
Explanation:
skeletal muscle fibres occur in muscles which are attached to the skeleton. They are straited in appearance and under voluntary control.
Hope it helps.
Hydrogen and hydroxide ions
