1. She used radioactive carbon to measure the flow and sharing of carbon between individual trees and species.

2. I injected carbon-14, the radioactive gas, into the bag of birch.

3. Carbon 14 a radioactive isotope of carbon, atomic mass 14, having a half-life of 5730 years; used as a tracer in cancer and metabolic research

4. Carbon 14 definition is - a heavy radioactive isotope of carbon of mass number 14 used especially in tracer studies and in dating old materials (such as archaeological and geologic specimens).

5. Radioactive waste is waste that contains radioactive material.

6. Leaves of Bryophyllum daigremontianum without epidermis on the abaxial side evolved 14CO2 in light after they had fixed radioactive carbon dioxide in the dark.

7. This hole looks radioactive.

8. Actinium is dangerously radioactive

9. Nevertheless, all Actinides are radioactive.

10. Ted, you're radioactive by nature.

11. Actinium is a radioactive element.

12. Radioactive Contamination occurs when radioactive material is deposited on or in an object or a person

13. Actinium is commonly for radioactive research as it has many radioactive elements resulted from uranium residue

14. Carbon, carbon black for industrial purposes, carbonates, activated carbon

15. "Bit9 + Carbon Black is Now Carbon Black - Carbon Black".

16. Copernicium is a highly radioactive metal

17. 10 Uranium is a radioactive material.

18. All isotopes of Berkelium are radioactive

19. Measure the activity of radioactive materials.

20. Radioactive Fallout—A Matter of Concern

21. Radium and uranium are radioactive elements.

22. Carbon 14 synonyms, Carbon 14 pronunciation, Carbon 14 translation, English dictionary definition of Carbon 14

23. Carbon Bisulfide synonyms, carbon Bisulfide pronunciation, carbon Bisulfide translation, English dictionary definition of carbon Bisulfide

24. 1.1 Radioactive fallout is nearly always transboundary.

25. 8 Radioactive waste is simply spent fuel.

26. It's a radioactive catastrophe waiting to happen.

27. Antimatter is also produced by radioactive decay.

28. Cycloalkanes only contain carbon-hydrogen bonds and carbon-carbon single bonds

29. 31 Radioactive Fallout—A Matter of Concern

30. 14 Radium and uranium are radioactive elements.

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32. Curium is a radioactive rare earth metal

33. Californium is a man-made radioactive metal

34. Radioactive sludge was channelled into large basins.

35. Radioactive water had seeped into underground reservoirs.

36. Actinides A class of very heavy radioactive nuclei

37. Some of the fission fragments are themselves radioactive.

38. Carbon nanotubes, fullerene, and amorphous carbon are some other Allotropes of carbon

39. Alkenes are hydrocarbons that contain a carbon-carbon double bond, whereas Alkynes have a carbon-carbon triple bond

40. Actinium is a soft, silvery-white, radioactive metal

41. The nuclear industry produces waste streams which contain a variety of radioactive metal ions, the extraction of which minimises radioactive discharges.

42. Radioactive emissions spread over Japan and other countries.

43. 5 The machine can accurately locate radioactive material.

44. It's still thermally hot but it's not radioactive.

45. People aren't supposed to just dump radioactive material.

46. The birch had taken up the radioactive gas.

47. 12 Always exercise caution when handling radioactive substances.

48. 3 Radioactive water had seeped into underground reservoirs.

49. 1 The machine can accurately locate radioactive material.

50. Adosterol A sterol usually substituted with radioactive iodine

51. A faint radioactive trace from Alpha's power source.

52. Carbon-carbon, Ceramic and Metal "matrix""composites"

53. “Once an organism dies, it no longer absorbs new carbon dioxide from its environment, and the proportion of the isotope falls off over time as it undergoes radioactive decay,” states Science and Technology Illustrated.

54. The radioactive 135Cs has a very long half-life of about 2.3 million years, the longest of all radioactive isotopes of caesium.

55. Apsaras features a displacement carbon fibre hull and carbon fibre superstructure, with carbon/epoxy decks

56. Fertilizers for aquatic and ornamental plants, carbon for filters, activated carbon and carbon granules

57. Unlike helium - it cannot be produced by radioactive decay.

58. Alkenes have a carbon-to-carbon double bond

59. Activated carbon, carbon for filters and filter materials

60. Autunite is Radioactive as defined in 49 CFR 173.403

61. Coal ash contains the radioactive elements uranium and thorium.

62. 15 Radioactive material was mixed in/up the effluent.

63. 13 Tritium is one of the mildest radioactive isotopes.

64. A radioactive plume could reach the city within hours.

65. 12 Operator errors allowed the radioactive core to overheat.

66. Carbon 14 is a common isotope of carbon

67. The carbon-containing particles are for example acetylene black, activated carbon, carbon nanotubes or graphite.

68. Carbon Bisulfide (uncountable) (inorganic chemistry) carbon disulfide; Usage notes

69. The key difference between alkenes and Alkynes is that the alkenes have carbon-carbon double bonds whereas the Alkynes have carbon-carbon triple bonds.

70. 7 These are standard procedures for handling radioactive waste.

71. Plumes of radioactive smoke were billowing around the helicopter.

72. 11 Radioactive waste has been found at the dump.

73. 2 People should keep away from the radioactive waste.

74. Becquerel (plural Becquerels) In the International System of Units, the derived unit of radioactive activity; the activity of a quantity of radioactive material in which …

75. Acid rain and radioactive clouds have damaged large areas.

76. Alkynes are molecules that contain carbon-carbon triple bonds

77. Fertilizers, excluding compositions containing industrial carbon black, activated carbon

78. It has a core, and it has a heat exchanger from the hot salt, the radioactive salt, to a cold salt which isn't radioactive.

79. Carbon dioxide

80. Curium is very radioactive, more electropositive than Aluminum, chenically reactive.