Anatomy and physiology homework........thanks!:)
2007-03-21 06:20:50 · 10 answers · asked by angie 2 in Science & Mathematics ➔ Biology
Hydrogen, in the form of H2O. While we're all Carbon-based, we're more than 50% water.
2007-03-21 06:24:31 · answer #1 · answered by LabGrrl 7 · 0⤊ 0⤋
THE MOST ABUNDANT MINERAL ON EARTH , silicate perovskite, has, ironically, been of more interest to materials scientists than to geologists, according to Alexandra Novrotsky of the Princeton Materials Institute. Perovskite, a class of ceramic crystal (e.g., MgSiO3) in which three chemical elements in the ratio 1:1:3 form a cubic structural unit, makes up 80 to 100% (by volume) of the lower mantle. Materials scientists eagerly study artificially made perovskite, hoping to synthesize, among other things, high-temperature superconductors. By contrast, the perovskite samples geologist want to study lie 670 km underfoot. Increasingly, however, geologists are able to study perovskites under conditions resembling those of deep Earth interior using high-pressure diamond-anvil cells. (Materials Research Society Bulletin, May 1992.)
Hydrogen is the most abundant gas
Aluminum is the most abundant metallic element on the surface of the Earth. This light metal comprises more than 8 percent of the Earth's crust. It is also the most abundant metallic element on the surface of the moon.
2007-03-21 13:30:23 · answer #2 · answered by Curly 4 · 0⤊ 1⤋
Water or H2O as some like to call it. By definition, a substance can be either an element or a compound. Although hydrogen is in water it doesn't exist in a state by itself in high concentrations like water does. Same for carbon.
2007-03-21 13:31:24 · answer #3 · answered by The man 7 · 0⤊ 0⤋
Water
2007-03-21 13:27:02 · answer #4 · answered by Swamy 7 · 0⤊ 0⤋
One oxygen atom is heavier then two hydrogen atoms so if you were going by weight then oxygen would be most abundant.
If you trust wiipedia you can find more here http://en.wikipedia.org/wiki/Chemical_makeup_of_the_human_body
2007-03-21 13:43:36 · answer #5 · answered by pewphead 3 · 0⤊ 0⤋
In numbers, hydrogen atoms.
2007-03-21 14:37:38 · answer #6 · answered by Anonymous · 0⤊ 0⤋
its carbon. all living things have carbon. water is abundant in everything too, but when you get down to the nitty gritty-its carbon!
2007-03-21 13:29:31 · answer #7 · answered by imcold07 3 · 0⤊ 1⤋
carbon
all living beings on earth has this kind of molecule. That is why scientist use carbon dating.
2007-03-21 13:24:27 · answer #8 · answered by cc rider 1 · 0⤊ 1⤋
well if u say material, its water. if u say element, its definitely carbon
2007-03-21 14:44:14 · answer #9 · answered by vivian 2 · 0⤊ 0⤋
I would say hydrogen
2007-03-21 13:26:39 · answer #10 · answered by misoma5 7 · 0⤊ 0⤋