What is the human body made of ?

For example, What is the hamberger made of ?

We can answer that is made of bread and hamberg and vegetable.

Then, What is the hamberg made of ?

That's made of meat, onion, egg, salt, pepper... We can state more details.

When we think about what nutrients does it contain ? We can say it contains protein, carbohydrates, fat.

Like I write above, There are various answer for the question "What is the human body made of ?"

The human body is made of muscles, bones, internal organs, skin, blood, etc.

The source of all human body conponents is cell, cell is the smallest part in the human body. It's said adult human body have 60 trillion cells. 

Furthermore, let's think about the human body's material.

70% of the human body is water, the rest is protein, fat, etc.

If these are further decomposed, 96% of the human body is 4 elements(oxygen, carbon, hydrogen, nitrogen). The rest is mineral(calcium, phosphorus, iron, copper, etc).

the human body hardly have minerals. but if we don't have minerals, we can't live.