| CASEIN | Main protein occurring in milk, precipitated by the action of the enzyme rennin; from Latin, ' cheese' ( 6) |
| LACTALBUMIN | Whey protein occurring in milk, containing all of the essential amino acids (11) |
| CURDS | Rennin results in them |
| ENZYMES | Pepsin and rennin, for two |
| SEAFOAM | Word for froth formed by the action of the ocean's waves; an aqua-like shade of green; or, a literal translation of "meerschaum" (3,4) |
| ELUVIUM | Residual deposits of soil, dust, and sand produced by the action of the wind. (7) |
| BELLBUOY | An anchored float rung by the action of the waves to warn shipping of shallow waters (4,4) |
| RICIN | Highly toxic protein occurring in the seeds of the castor-oil plant in the family Euphorbiaceae (5) |
| INDIRECTOBJECT | Noun phrase secondarily affected by the action of the verb (8,6) |
| SOLAR | Orals, disturbed by the action of the sun (5) |
| RIBOSOME | Minute particle of RNA and associated proteins occurring in all living cells; the site of protein synthesis (8) |
| EROSION | Process by which the surface of the earth is worn away by the action of natural forces |
| LEACH | Purging a soluble matter out of something by the action of a percolating fluid - such as fertiliser out of the soil caused by heavy rain (5) |
| CURD | Coagulated substance formed from milk by the action of acid or rennet, used as the basis for cheese (4) |
| AGENTNOUN | Part of speech denoting someone who performs the action of the verb, eg worker or driver, (5,4) |
| ARNHEM | In and around which town does the action of the 1977 film A Bridge Too Far take place? (6) |
| CONCORD | Town in Massachusetts, scene of one of the opening military actions of the War of American Independe |
| CENTRIFUGE | A rotating machine that separates liquids from solids by the action of a type of force (10) |
| YOGHURT | Custard-like food made from milk curdled by the action of bacterial cultures. (7) |
| WEATHERING | The mechanical and chemical breakdown of rocks by the action of rain, snow, cold etc (10) |
