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To: gore3000
If plants were converting oxygen from water at such a rate, the seas would be dropping constantly and would have almost dissappeared by now.

Do you ever run the numbers before making such statements? Don't you know anything about science? You're the one claiming to have a leg up on everything, so work out the amount of water required to make an atmosphere of 21 percent oxygen. We'll make it somewhat easier for you:

• Figure the Earth's atmosphere to be about 150 kilometers deep (this is close enough for government work).
• Assume, also that the hydrogen part eventually bleeds off into space (which is what really happens).
• The diameter of the Earth is 12,756 km.
• According to this site, oxygen makes of 88.81 percent of pure water by weight.
• According to this site, air weighs 1.2 kilograms per cubic meter.
• This site says that oxygen makes up 23.15 percent of the atmosphere by weight, or 0.2778 kilograms per cubic meter of air, and 85.8 percent of seawater by weight (858 kilograms per cubic meter).

The last point means that for every cubic meter of sea water you get a little more than three cubic meters of atmospheric oxygen.

I'll let you work out just how many cubic meters of seawater had to be converted to get the current atmosphere. With actual numbers, you can make an argument, rather than just throwing out stuff willy-nilly Mr. 21st century scientist.

720 posted on 02/25/2002 2:33:03 AM PST by Junior
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To: Junior
Aaargh! More like 3088.6 cubic meters of air per cubic meter of seawater!
724 posted on 02/25/2002 4:39:55 AM PST by Junior
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To: Junior
"This site says that oxygen makes up 23.15 percent of the atmosphere by weight, or 0.2778 kilograms per cubic meter of air, and 85.8 percent of seawater by weight (858 kilograms per cubic meter).

The last point means that for every cubic meter of sea water you get a little more than three cubic meters of atmospheric oxygen."

Okay, let's go by your numbers. 3 to 1 ratio. Let's forget that since the atmosphere is higher it covers more area. The atmosphere is some 20 miles deep. Now the lowest ocean dephts are less than 30,000 feet deep. That is just 6 miles at the deepest point. The average depth of the oceans is much less, say 10,000 feet. That is a mere 2 miles. 2 x 3= 6. So yes, if this were going on constantly the oceans would be empty eventually and more importantly, we would have evidence of big, very big falls in ocean levels in geologic times. This is not the case. Vade's statement is total bunk as I said.

789 posted on 02/25/2002 7:24:21 PM PST by gore3000
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