Переведите предложения, определив по формальным признакам функцию причастия. 12. the number of molecules in each cubic centimeter of the substance being compressed is increased. 13. he stopped before a closed door. 14. when proving his thought the scientist referred to sechenov’s works. 15. the region being investigated is situated in the north. 16. the tv programmes showing the latest scientific achievements are very popular. 17. starting an experiment a chemist must first determine if the substance is a compound or simply a mixture. 18. all the questions asked were answered. 19. when exploring the kursk magnetic anomaly lasarev, a leading soviet scientist, discovered the richest iron-ore deposits in the world. 20. the molecules begin moving slower while cooling. 21. this group of engineers is working out a new device being used in different conditions underground. 22. the metals being used in the experiment possessed many important properties. 23. adding heat we can change the state of a substance. 24. when heated, a magnet loses some or all its magnetism. 25. the material tested showed good properties.