Moreover, the use of urea reduces the salt load (less inhibition, diminished environmental impact).
As a result, environmental pressure has shifted from the Yellow river to its tributaries – which are increasingly polluted – and underground aquifers, which are diminishing at an alarming rate.
These were: new technology, environmental pressure, illiteracy and costs.
"It's perfectly logical considering Gore and Clinton and the environmental pressure".
Environmental pressure can, and does, force the industry to change.
But even as the environmental pressure on companies heats up, the number of surprising benefits from environmental programs may dwindle.
"Reclamation should be the last resort," said Roy Tam Hoi-pong, chairman of environmental pressure group Green Sense.
They also need the developed world's social and environmental pressure.
After his electoral defeat, he became chairman of the Wilderness Society, an environmental pressure group.
Environmental pressure groups are not keen.
