| ECOTYPE | What is the population of an organism that has adapted to certain environmental conditions? (7) |
| CELL | Science time: Unlike humans, an amoeba is an organism that has just one ___ (We each have over 37 trillion of them in our bodies!) |
| ECOLABEL | An identifier for products which satisfy certain environmental conditions about their use etc (3,5) |
| NECK | E part of an organism that connects the head to the rest of the body (4) |
| FOSSIL | A relic, remnant or representation of an organism that existed in a past geological age (6) |
| AMOEBA | Single-celled organism that has the ability to alter its shape (6) |
| SIERRAN | Member of a certain environmental club |
| ACIDRAIN | Certain environmental concern |
| ALLKIEV | The whole of the area, or the population, of the capital of Ukraine (3,4) |
| WALLOON | Member of the French-speaking people comprising around 30% of the population of Belgium, chiefly living in the south and east (7) |
| TEASHOP | Poet has adapted to it (7) |
| CALORIE | Unit equal used to express the heat output of an organism and the fuel or energy value of food. (7) |
| RABBITS | In 2019, the Shifting Sands team began trials to encourage the population of ... across 5 Breckland sites (7) |
| MIMICRY | The act/skill of apery or burlesque; or, the resemblance of an organism, such as a stick insect, to another animal/object, such as a twig (7) |
| ENMASSE | “Adam was bored alone [...] Then the population of the world increased, and the peoples were bored ____” (Kierkegaard) |
| HABITAT | Place that is natural for the life and growth of an organism |
| VIETNAM | The population of this South-East Asian nation is estimated at over 84 million |
| WALMART | Around 37 million people shop at it every day, roughly equivalent to the population of Canada |
| OBLIGATE | Of an organism, able to exist under only one set of environmental conditions; the opposite of facultative (8) |
| SPARSER | Like the population of Alaska vis-a-vis New Jersey (7) |
