1.   The acidity in the citrus is excellent for raising the acid level in the compost heap.

2.   These drugs may elevate acid levels in the blood.

3.   The luminal pH near the intestinal apical membrane is maintained at a more acid level than bulk luminal pH.

4.   And the acid level of the water affects the behavior of these partners.

5.   A normal vagina contains many bacteria that help keep it healthy by raising the acid level and preventing the growth of harmful microorganisms that prefer a more alkaline environment.

6.   If the acid level is consistently high, you probably have GERD.

7.   In fact, a St.-Amour will probably age better than a Fleurie or a Brouilly because it has better acid levels than either of those wines.

8.   Scientists have not been able to duplicate some of that damage in laboratory studies by manipulating the acid level alone.

9.   The reduction in acid levels caused increases in the diversity of microscopic plants and other wildlife.