To a physicist, about 98% of the total atoms in one's body are replaced within one year's time. Accounting for the spaces between those atoms and their nucleus's and respective electrons, nearly 100% of the human body is mostly empty space.
To a biologist, we're just a biological self-replicating sequence, an arrangement. Our bodies have totally new cells in them than from seven years ago. 90% of the cells inside and outside our bodies are actually microbes. We're a bag of micro-organisms, parasites and pathogens.
To a chemist, our cells consist anywhere between 65–90% water. Therefore oxygen has the vast majority of our bodies' total mass, then followed by carbon and the rest.
We're chiefly made up of six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
"I" is an illusion.
To a biologist, we're just a biological self-replicating sequence, an arrangement. Our bodies have totally new cells in them than from seven years ago. 90% of the cells inside and outside our bodies are actually microbes. We're a bag of micro-organisms, parasites and pathogens.
To a chemist, our cells consist anywhere between 65–90% water. Therefore oxygen has the vast majority of our bodies' total mass, then followed by carbon and the rest.
We're chiefly made up of six elements oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
"I" is an illusion.
