| A | B |
|---|
| Yeast | promotes alcoholic fermentation |
| Yellow Fever - disease | caused by a virus |
| Yoghurt - fermented, slightly | acid product made from milk |
| Yterbium | a rare earth mineral |
| Yttrium | a fairly rare earth mineral |
| Yakima - city southeast of | Seattle |
| Yano indigirskaya Nizmennost | district in Northern Russia |
| Yitomio - settlement on the | Norwegian-Finnish border |
