Solve these clues to fill the grid.
- Being or containing an acid
- 1 Across
- Gases ejected from an engine as waste products
- 3 Across
- Inflammation of the membranes lining the ___ tubes
- 4 Across
- A substance formed by chemical union of two or more elements or ingredients in definite proportion (plural)
- 5 Across
- Respiratory disease characterized by inflammation of the lung parenchyma with congestion caused
- 7 Across
- The quantity of water falling to earth at a specific place within a specified period of time
- 9 Across
- Relating to or containing an ___
- 1 Down
- Photosynthetic or plant constituent of plankton
- 2 Down
- A colorless gas soluble in alkalis and cold water
- 6 Down
- Respiratory disorder characterized by wheezing
- 8 Down