51.   The Hawks are precariously thin at power forward, and the free agent talent level drops dramatically if they lose Ellis.

52.   The levels drop in the spring when the plants regain their leaves.

53.   The Oreos are an emergency snack for any child whose blood sugar level has dropped enough to distort his or her personality.

54.   The noise level drops.

55.   Then, before lake levels dropped enough to hinder navigation, Jefferson became the second largest port in Texas, after Galveston.

56.   Unlike Houston, Los Angeles began fighting nitrous oxides roughly a decade ago, and its ozone levels have dropped significantly.

57.   Vaginal dryness may result when estrogen levels drop following delivery.

58.   When large numbers of neurons are injured or killed, NAA levels drop and damaged cells release more choline.

59.   When the patient is successfully treated for prostate cancer, his PSA levels ordinarily drop again.

60.   When the rats were given leptin, the endocannabinoid levels dropped.