Final answer:
Lions consume things mainly to obtain nutrients and energy necessary for survival, to regulate their body temperature, and to maintain a stable internal environment known as homeostasis.
Step-by-step explanation:
Organisms, including lions, consume things primarily to obtain nutrients and energy, which are essential for survival. Lions and other animals use the energy derived from their diet to maintain their body temperature (thermoregulation), which is a crucial part of homeostasis. Homeostasis is the regulation of a stable internal environment, vital for the proper functioning of cells and overall health. In addition, consuming food helps animals in growth, maintenance, and reproduction, and can sometimes contribute to social bonding and behaviors that stem from instinctual drives.