11.   Nitrogen-enriched air is pumped into the fuel tanks during flight to lessen the danger of an explosion in the event the tank is hit by enemy fire.

12.   Snowpack could lessen danger Ochoa said near-record snowpacks in California and elsewhere in the West may help ease the fire threat this spring and summer.

13.   Still the authors believe dangers can be lessened by increasing cooperation between Russia and the United States and the involvement of other countries.

14.   That takes a little longer, but the cable melts the ice uniformly and lessens the danger of steam build-up.

15.   The danger is lessened, though, by proper training.

16.   The drastic operation is performed to lessen the danger from poachers, who sell horns to Asian countries for medicinal use.

17.   The safety board last year strongly recommended that inert nitrogen gas be pumped into jetliner fuel tanks to lessen the danger of an explosion.

18.   They are certain to damage global efforts to lessen the dangers of a nuclear-armed world.

19.   Meselson insists that international treaties are vital to lessen the danger even if they do not eliminate it.

20.   Most importantly, Chavalit said, foam has been built into the hull to lessen the danger of capsizing.