Download Green Planet: How Plants Keep the Earth Alive by Professor Stanley A Rice PDF

Posted On April 11, 2017 at 11:21 pm by / Comments Off on Download Green Planet: How Plants Keep the Earth Alive by Professor Stanley A Rice PDF

By Professor Stanley A Rice

As a businessperson, this ebook gave me a far deeper figuring out of the way all human financial structures rely on the ecology of crops. The lifestyles help procedure of the wildlife can not be discounted through companies and the marketplace as an "externality". certainly, not anything is much less exterior to the human firm than the paintings of vegetation, for which there's no alternative at ANY cost. Dr. Rice's pictures and illustrations have been an advantage!

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Extra info for Green Planet: How Plants Keep the Earth Alive

Sample text

3 billion tons of oxygen that plants put into the air each year is thus only a small fraction of the oxygen. According to this simple calculation, it would take almost 35,100 years for the oxygen to be used up if photosynthesis stopped. No wonder it took photosynthetic microbes such a long time to create the beautiful blue sky almost a billion years ago. But we cannot simply ignore photosynthesis just because the atmosphere contains so much oxygen gas. If we reduced the photosynthetic capacity of the earth’s vegetation by half, the atmospheric oxygen content would decrease by 1 percent every 3,500 years.

What Would Happen if Photosynthesis Stopped Producing Oxygen? As the above numbers indicate, the amount of oxygen gas in the atmosphere far exceeds the annual use of oxygen by the respiration of cells, the decomposition of dead biological material, and all of human industry. Also, it is nearly impossible to conceive of a likely situation that could cause all or most photosynthesis to stop. This is why the suffocation of the earth is the least likely environmental danger that we face. But it has happened before.

Terraces, used to raise rice, trapped soil as well as water, and allowed continuous cultivation in extensive areas of China, southeast Asia, and Japan. There are even some instances in which the practice of agriculture built up rather than depleted the soil. The soil of the Amazon rain forest is notoriously poor, except along rivers and near volcanic slopes where minerals can be replenished. Even today, people cut down forests in the Amazon and try to raise crops, a practice that is only marginally and temporarily successful.

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