Glucose, water etc.... doesn't require ATP !
these molecule does not require energy to pass from the cell. it happens according to concentration gradient or by passive transport !!!
<span>The fluid-filled gap is called a body cavity. There are multiple body cavities in the human body, of which include the Cranial cavity, Dorsal cavity, spinal cavity, pelvic cavity, abdominopelvic cavity, abdominal cavity, ventral cavity, and thoracic cavity. The digestive organs are protected by the abdominopelvic cavity.</span>
Organisms get the energy they need from food just like us humans do.
The Immune system and Endocrine system work
together to remove these wastes from their cells.