GMAT
Whereas the use of synthetic fertilizers has greatly expanded agricultural productivity in many parts of the world, an increase in their use can create serious environmental problems such as water pollution, and their substitution for more traditional fertilizers may accelerate soil structure deterioration and soil erosion.
It was only after Katharine Graham became publisher of The Washington Post in 1963 that it moved into the first rank of American newspapers, and it was under her command that the paper won high praise for its unrelenting reporting of the Watergate scandal.
Many population studies have linked a high-salt diet to high rates of hypertension and shown that in societies where they consume little salt, their blood pressure typically does not rise with age.
In Britain, "pig" refers to any member of the class of domestic swine, but the United States uses the term when referring only to younger swine not yet ready for market and weighing less than 82 kilograms (180 pounds).
Many environmentalists, and some economists, say that free trade encourages industry to relocate to countries with ineffective or poorly enforced antipollution laws, mostly in the developing world, and that, in order to maintain competitiveness, rich nations have joined this downward slide toward more lax attitudes about pollution.
Although they are more temperamental and far more expensive than transistor-driven amplifiers, many audiophiles and audio professionals prefer the warmer, richer tones produced by vacuum-tube-driven amplifiers.
A recording system was so secretly installed and operated in the Kennedy Oval Office that even Theodore C.Sorensen,the White House counsel, did not know it existed.