Science & Mathematics - 21 November 2006

2006-11-21 23:57:36 · 3 answers · asked by Payal 1 in Biology

I did some hard reasearch but I coudlt find out anything about the following questions

I answered for the question (WHAT IS OXYGEN USED FOR?)

and answered

Oxygen is a very common yet vital element and used in many things. First, it is an element used to make water which is needed for life, H2O. Secondly, it is the gas which we breathe in for respiration.

And I cant answer the question
-WHY THE GAS HAVE THESE USES?

And the Last question I need help on is
-HOW THE GAS COULD BE OBTAINED?
-

2006-11-21 23:57:13 · 2 answers · asked by knd1994 2 in Chemistry

2006-11-21 23:56:12 · 11 answers · asked by Anonymous in Biology

2006-11-21 23:56:11 · 4 answers · asked by potpot n 1 in Chemistry

we have middle earth in lord of the rings.do we also have a top earth and a bottom earth?

2006-11-21 23:55:15 · 7 answers · asked by Norge 2 in Astronomy & Space

cot to power-1 * [(cos2x) to power 1/2 ] at x=pi/6

2006-11-21 23:49:48 · 3 answers · asked by Anonymous in Mathematics

2006-11-21 23:45:48 · 1 answers · asked by sarah s 1 in Engineering

2006-11-21 23:38:33 · 6 answers · asked by abdel2709 1 in Mathematics

2006-11-21 23:31:45 · 3 answers · asked by moHsen m 1 in Engineering

I'm trying to organise an aerial photo of a certain number of people, and have a certain amount space to work with. I'm trying to work out how many people will fit into that space, standing very close together but I'm not sure how much space one person takes up. Does anyone know of a way to work this out?

2006-11-21 23:30:35 · 6 answers · asked by Geraldine S 1 in Mathematics

2006-11-21 23:29:11 · 19 answers · asked by Anonymous in Geography

I'm trying to organise an aerial photo of a certain number of people, and have a certain amount space to work with. I'm trying to work out how many people will fit into that space, standing very close together but I'm not sure how much space one person takes up. Does anyone know of a way to work this out?

2006-11-21 23:29:01 · 8 answers · asked by Geraldine S 1 in Astronomy & Space

2006-11-21 23:25:58 · 8 answers · asked by Anonymous in Biology

I am doing A-level Salters Chemistry and i am looking for a free past exam paper for the unit 2849: Chemistry of materials, so i can practice the questions for the upcoming exams in January 2007. Please I need ur help.

2006-11-21 23:25:11 · 5 answers · asked by imz11 2 in Chemistry

2006-11-21 23:22:54 · 10 answers · asked by Anonymous in Biology

2006-11-21 23:18:51 · 2 answers · asked by chukchuk 1 in Physics

1.srqareroot of x+y +xy=21
2.b^2x^2 + a^2y^2=a^2b^2

2006-11-21 23:18:07 · 5 answers · asked by gen 2 in Mathematics

There is a section in yahoo answers that has the heading "ALTERNATIVE" . Can anyone explain me what is ??

2006-11-21 23:15:21 · 4 answers · asked by cjain 3 in Other - Alternative

2006-11-21 23:14:26 · 12 answers · asked by G-Man 3 in Astronomy & Space

2006-11-21 23:09:55 · 12 answers · asked by Anonymous in Astronomy & Space

2006-11-21 23:05:10 · 11 answers · asked by Wes H 1 in Biology

2006-11-21 23:04:25 · 21 answers · asked by Sandi 1 in Physics

how could someone say that ghosts, or aliens dont exsist as if its a fact i mean, no ones all knowing and science wont exsplain and prove everthign anytime soon and i doubt it can prove and exsplain everything. so how can u say somethign doesnt exsist, liek fate or god, or ghosts, or an afterlife. imean u cant know for certian. to the peopel who think they know things for certain.

2006-11-21 23:00:06 · 18 answers · asked by som1 3 in Other - Science

biology

2006-11-21 22:54:50 · 1 answers · asked by Tiffany 1 in Biology

2006-11-21 22:51:40 · 25 answers · asked by Anonymous in Biology

2006-11-21 22:51:00 · 20 answers · asked by millionairenotyet 1 in Astronomy & Space

MEASURE OF ANGLE OF ELEVATION OF THE TOP OF THE CLIFF IS 25,ON WALKING 100 METERS TOWARDS THE CLIFF,MEASURE OF ANGLE OF ELEVATION OF THE TOP IS 45 DEGREE.FIND THE HEIGHT OF THE CLIFF.

2006-11-21 22:50:33 · 5 answers · asked by powerx 1 in Mathematics

2006-11-21 22:41:05 · 41 answers · asked by ogie 1 in Earth Sciences & Geology

2006-11-21 22:34:13 · 8 answers · asked by Anonymous in Astronomy & Space

I'm doing correlation analysis between atmospheric pressure and wind speed during hurricanes. The problem is, I only have data for atmospheric pressure. Is there an equation where I can plug in the pressure so I can get the equivalent wind speed? Thanks for your help!

2006-11-21 22:33:50 · 7 answers · asked by Chris 2 in Weather