| HUMIC | Of, or relating to, natural organic compounds in the soil, formed from the decomposition of plant and animal residues (5) |
| HUMUS | Natural organic compounds in the soil, formed from the decomposition of plant and animal residues (5) |
| RADICLE | Part of plant an extremist referred to in speech |
| FIREDAMP | Mixture of gases, chiefly methane, which occurs from the decomposition of coal (8) |
| ORINOCO | Recycling expert loves to collect tops to reuse in natural organic containers (7) |
| ELECTROLYSIS | The decomposition of a substance by the application of an electric current |
| CO | A heavy odorless colorless gas formed during respiration and by the decomposition of organic substan |
| KAOLIN | Fine white clay produced by the decomposition of feldspar and other minerals, used to make porcelain and bone china (6) |
| CHOLESTEROL | Fat-like compound in the bloodstream from food or made by the liver which in excess can block arteries (11) |
| ETHER | Any of a class of volatile liquid compounds in which an oxygen atom is bonded to two alkyl or aryl groups, commonly used as solvents (5) |
| METHANE | A greenhouse gas emitted by the decomposition of landfill waste (7) |
| AUBERGINE | Fruit of the egg-plant, an important ingredient of the Mallorcan dish tumbet (9) |
| COAL | Black or brown combustible mineral formed by decomposition of organic matter and used as fuel |
| ANTHILLS | Mounds of soil formed by insects of the family Formicidae (8) |
| MARS | The primary chemical compound in the atmosphere of this nearby red planet is carbon dioxide. (4) |
| ROSEHIP | A seed-filled bulb of a common prickly plant, an extract of which can be taken to reduce stiffness (4,3) |
| LIPIDS | Fatty organic compounds in living cells |
| TRIMESTERS | Cut organic compounds in quarters (10) |
| HYDROCARBONS | Organic compounds in petroleum (12) |
| DIGESTERS | Like organic compounds in vessels for extraction |
