Humans are actually made of oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus which is what 99 percent of the human body is made of.
The other 0.85 percent of the human body and mass is made up of sulfur, sodium, chlorine, magnesium and potassium.
The four most abundant elements in the human body are hydrogen, oxygen, carbon and nitrogen account for more than 99 percent of the atoms inside the human body.
They are found throughout the human body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.
Human evolution is the lengthy process of change by which people originated from apelike ancestors.
Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.
The first heaviest organ of the human body is the skin with a mass of four to five kg.
The liver is the second heaviest organ in the human body, which discharges bile.
The weight of the liver is about 1.5 kg.
The brain is the third heaviest organ of the human body with an approximate mass of 1.5 kg.
Oxygen is the most abundant element in the human body, accounting for about 65% of a person's mass.
Each water molecule is made up of two hydrogen atoms bonded to one oxygen atom, but the mass of each oxygen atom is much larger than the combined mass of the hydrogen.
Human was first recorded in the mid 13th century, and owes its existence to the Middle French humain “of or belonging to man.”
That word, in turn, comes from the Latin humanus, thought to be a hybrid relative of homo, meaning “man,” and humus, meaning “earth.”