The answer is 'The Biosphere.'
In modern texts and in Earth system science, geosphere<span> refers to the solid </span>parts<span> of the Earth; it is used along with atmosphere, hydrosphere, and biosphere to describe the systems of the Earth.</span>
<span>Primary endocrine disorders may be due to damage to the hormone producing organ. Karen’s thyroid gland suffered damage from repeated exposure to radiation because of a neck injury. The option which is least likely to be part of a primary endocrine disorder for Karen is decreased osteoblast sensitivity to calcitronin. </span>