ACROSS
1. Solid matter settling at the bottom of a liquid (8) 5. Variety of plant that is cultivated for particular attributes (8) 9. Wild (5) 10. Large, long-necked, elegant river bird, usually white (4) 11. A poly_is plastic sheeting used to12. One of many insects that destroy cereal grasses (5,3) 14. Disease of conifers also called needle blight (4,4) 17. Steak cut from between ribs (9) 19. Bird that goes under water to fish (5) 21. Of a sheep, deprived of its fleece (5) 22. Person employed to perform a public duty (7) 23. Twisted, woody climbing plant of tropical rain forests (5) 25. Piece of lead on a string used for checking verticality (5) 27. Of the heart, to beat rapidly (9) 29. Descriptive of rural life or the countryside (8) 32. Young hares (8) 33. Round in body shape (6) 34. Encounter (4) 35. Egg-shaped (5) 36. Melodious bird (8) 37. Rigorously (8)
