<span>Heterotrophs, organisms that must get energy from food indirectly from sunlight or inorganic substances, go through the process of cellular respiration to get the energy needed.</span>
The structure that serves as the cell's boundaries from its environment is known as the CELL MEMBRANE. It keeps the bad things from coming in, and releases waste out into the environment.
<span>Answer: cell membrane</span>
They release the gas Oxygen.
