Answer:
- Tissue - cardiac tissue
- Organ - heart
- Organ system - circulatory system
Explanation:
Every organism organised according to the level of organization. Levels of organization helps us to understand the structure and function of the organisms.
As per the image given in the question:
Cardiac muscle is a type of muscular tissue which made of cardiomyocetes. Heart is an organ made of cardiac tissue.
Circulatory system is a system made of different organs such as heart, blood vessels.
