Final answer:
Organisms consume energy for their metabolic activities, and this energy is mainly used or converted into work, thermal energy, or stored as chemical energy in fatty tissue.
Step-by-step explanation:
Organisms consume energy for their metabolic activities. The energy they consume is primarily used or converted into work, thermal energy, or stored as chemical energy in fatty tissue. The fraction of energy going into each form depends on factors such as the amount of food consumed and the level of physical activity. If an organism consumes more energy than is needed for work and warmth, the excess energy is stored as body fat.