41.   The researchers found that acid rain is releasing toxic aluminum from the soil, putting stress on red spruce forests that may slow their growth.

42.   The soybeans are developing seed pods, which puts maximum stress on the plants and is crucial to how much they yield at harvest.

43.   They worked out routines that would put no stress on the weakened bones and muscles in the lower back.

44.   U.S. officials put their stress, though, on pressing Milosevic from office.

45.   Verizon Communications, which provides local phone service in New York and Washington, said its call volume doubled in both cities, putting stress on its network.

46.   When he put stress on the joint, lifting weights or turning the elbow, the discomfort was unbearable.

47.   When you challenge yourself physically, you put stress on your body.

48.   When you run, it probably puts stress on a lot of your major organs.

49.   While humans may enjoy changing their surroundings for newer or larger homes, it can put stress on the four-legged members of the family.

50.   Wood has acknowledged that his style of pitching, in which he threw across his body, put additional stress on his elbow.