Answer:
The three organ systems that work together to provide an animal's cells with oxygen are the respiratory system, cardiovascular system, and the digestive system.
Respiratory system: The respiratory system is responsible for bringing oxygen into the body through breathing. The lungs are the main organs of the respiratory system.
Cardiovascular system: The cardiovascular system transports oxygen from the lungs to the body's cells through the blood vessels. The heart is the main organ of the cardiovascular system.
Digestive system: The digestive system is responsible for providing the nutrients necessary for energy production. The digestive system breaks down food and absorbs the nutrients that are used to produce energy. This energy is then used by the cells to perform their functions, including the production of ATP, which is necessary for many cellular processes.
Step-by-step explanation: