1.   But close examination showed that species intolerant of acid conditions or high nitrogen levels were not reappearing.

2.   Earthworms have extremely sensitive skins and can not thrive under acid conditions.

3.   Particular attention should be paid to the water, as it requires a good acid condition.

4.   One was to bring down the fever,another a purgative,the third to overcome an acid condition.

5.   The germs of influenza can only exist in an acid condition, he explained.

6.   This mutagenicity is enhanced by nitrosation in acid conditions.

7.   Spruces, white birch, rhododendrons and violets all require acid conditions.

8.   With indicator dyes, pink is common for acid conditions and blue for basic conditions.