"The paper industry is becoming more concentrated," Mr. Rogers said.

Moreover, trading has become far more concentrated in the hands of a few institutions.

The buyers must make big bets because the business has become so concentrated.

This keeps urine from becoming too concentrated and reduces the risk of developing kidney stones.

More palatable to cosmologists would be the possibility that the gas in groups and clusters has become more concentrated than the dark matter.

As overall smoking rates decline, in other words, the habit is becoming concentrated among the most troubled and marginal members of society.

If there's a shortage of water, everything becomes too concentrated to work right.

He called it "an urban myth" that the industry's ownership had become concentrated.

Wolf's feet slid back under the door, and Jack thought he had a glimpse of them becoming more concentrated, slimmer, narrower.

Wealth is becoming even more concentrated than income.