Across
- 2. a layer of dirt or froth on the surface of a liquid
- 4. area that channels rainfall
- 5. a unit of length equal to one millionth of a meter, used in many technological and scientific fields.
- 6. small loose particles of stone or sand.
- 7. excessive sentiment.
Down
- 1. a prolonged period of abnormally low rainfall, leading to a shortage of water.
- 3. a microscopic organism, especially a bacterium, virus, or fungus.