Sources please?
2007-08-01 19:05:43 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Essential though it is to life, carbon as a component of the human body takes second place to oxygen, which is an even larger proportion of the body's mass—65.0%—than it is of the Earth. Carbon accounts for 18%, and hydrogen for 10%, meaning that these three elements make up 93% of the body's mass. Most of the remainder is taken up by 10 other elements: nitrogen (3%), calcium (1.4%), phosphorus (1.0%), magnesium (0.50%), potassium (0.34%), sulfur (0.26%), sodium (0.14%), chlorine (0.14%), iron (0.004%), and zinc (0.003%).
see here:http://rds.yahoo.com/_ylt=A0geu4q6dLFGOngAyMFXNyoA;_ylu=X3oDMTFiazhka2dxBHNlYwNzcgRwb3MDOARjb2xvA2FjMgR2dGlkA01BUDAwNF8xMjIEbANXUzE-/SIG=11rcm1pki/EXP=1186121274/**http%3a//www.answers.com/topic/elements-2
2007-08-01 19:10:55 · answer #1 · answered by Anonymous · 7⤊ 0⤋
Hydrogen
Hydrogen is the most plentiful element in the universe, carbon the 4th most abundant (after helium and oxygen), and both of these elements are present in abundance on Earth.
Hydrogen and carbon both chemically combine with other elements so not all hydrogen and carbon has formed hydrocarbons. For example, lot of hydrogen is tied up in water, and a lot of carbon is tied up in carbonate minerals and carbon dioxide.
2007-08-01 19:26:41 · answer #2 · answered by ideaquest 7 · 0⤊ 0⤋
The most abundant elements in living things in order of abundance are O, C, H, N, Ca, P, S, and K.
Carbon is found in all organic matter
2007-08-01 19:07:59 · answer #3 · answered by ~brigit~ 5 · 1⤊ 1⤋
Hydrogen mostly
80% of all living things contain water. Water contains two Hydrogen atoms for each Oxygen atom.
Carbon takes the second place as a constituent of all organic matter.
2007-08-01 19:14:48 · answer #4 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋
Carbon is the most abundant element in living things. It's found in protein structures (think body cells and muscles!), carbohydrates, and lipids (fats), among other things.
2007-08-01 19:09:59 · answer #5 · answered by Anonymous · 0⤊ 1⤋
abundent in mass or quantity?
My gut says more atoms of hydrogen (many living things have dsignificant H20 content.
But since carbon is 12x heavier it might be be more abudent in mass...
2007-08-01 19:16:54 · answer #6 · answered by tonythetiger 2 · 1⤊ 0⤋
Hi. Hydrogen. We are mostly water and each molecules contains two H atoms.
2007-08-01 19:08:18 · answer #7 · answered by Cirric 7 · 2⤊ 1⤋
carbon
2007-08-01 19:08:33 · answer #8 · answered by crengle60 5 · 0⤊ 1⤋
i would go with oxygen.
2007-08-02 14:16:09 · answer #9 · answered by Dr. Eddie 6 · 0⤊ 0⤋
H
2007-08-01 19:07:46 · answer #10 · answered by Kimon 7 · 2⤊ 1⤋