what is the total amount of cellulose consumption in the world per year?
143228
If we're talking about humans, 0! We can't digest cellulose. If we're counting bacteria in termites in comsumption... Then it is a totally different question...
169365
The most recent reliable data I could find is from:\nUnited States International Trade Commission\nCut Flowers, USITC Publication 3580\nFebruary 2003\n\nThe data show that apparent consumption (in the United States) remained steady from 1997-2000 at about $1 billion.\n\nThe ratio of imports to apparent consumption remained relatively steady between 1997 and 2001 ranging from 59 percent to 63 percent. The main sources for imports during the period were Colombia, Ecuador, and the Netherlands.\n\n2001 imports (in US dollars):\nColombia . . . . . . . . . .  302,412,000\nEcuador . . . . . . . . . . .. 99,745,000\nNetherlands . . . . . . . . .. 67,097,000\nMexico . . . . . . . . . . . . 29,421,000
16225
Worldwide\n8.3 Million\n\nU.S.\n2.5 Million
641839
humans have an estimated 100 trillion cells...
685481
Around 6.5B in the whole world.
782571
there are 193 countries
528382
I've been told my various teachers/professors that it is believed that the appendix had a large rold in breaking down cellulose when humans would mostly eat plants. Cellulose is undigestable and is usually just passed straight through our bodies (it is what we call "fiber"). Plants are rich in cellulose, so when we were herbivores, we needed the appendix to break it down so we could use it for energy.
439600
6,507,353,390 as of 1:45:30 GMT\n\nCheck the current total for any second at the link below:
232455
by 2005 the number released by official statistics is 1307,560,000, among of which 43% in cities and the rest in the country. I think the actrual number will be larger than the statistics.
434315
The world population is the total number of humans alive on the planet Earth at a given time. According to estimates published by the United States Census Bureau,the Earth's population hit 6.5 billion on Saturday, February 25, 2006. In line with population projections, this figure continues to grow at rates that are unprecedented prior to the 20th century. Approximately one fifth of all humans that have existed in the last six thousand years are currently alive. By some estimates, there are now one billion (thousand million) young people in the world between the ages of 15 and 24.
771712
You ask an interesting question, actuallly.  The techniques used to answer this question keep getting refined and the equipment keeps improving, which allows scientists to make better estimates on this number.  Current estimates have it at roughly 125 billion.  Now, new technolgies may change this estimate - as knowledge improves, scientists reserve the right to change their minds.  :)
513731
Total for the year so far= 159.26
535421
a lot lol like 100 billion\ntry the link
227488
at least one per year :)
680635
Every day 400000 babies are born, 150000 people die for a net increase of 250000 human beings a day.\n\nCurrently the worldpopulation increases with 90 million a year, or about 1.4%. We are crowding 6500 million people on the planet.
1070038
about 1000 on a simple tree times roughly the amount of trees in the world which is over a 100,000,000 making 100,000,000,000,000 leaves on earth
429864
About a million years:\n\nSun puts out about 3.8*10^26 W\nWe use about 1.2*10^13 W\njust divide and convert from second into years.\n\n(this matches pretty good using the estimated 2005 eneregry consumption of about 4.6*10^27erg as well)