If earth didn"t have internal energy which carbon cycle process would not be possible

According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down