Which level of organization is shown in the diagram?
O organ
O tissue
O organ system
O cell

Organ level organization is shown in the picture.
What is the body organ ?
"Organs are the body's recognizable structures (for example, the heart, lungs, liver, eyes, and stomach) that perform specific functions. An organ is made of several types of tissue and therefore several types of cells .Cells are the basic building blocks of the body".
What are the four levels of organization in the human body?
"An organism is made up of four levels of organization: cells, tissues, organs, and organ systems".
To know more about Organs here
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