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31 High concentrations of toxic elements were found in the polluted areas of the sea.

32 A solution to the problem of toxic waste is proving elusive in the extreme.

33 When spilled into the sea, oil can be toxic to marine plants and animals.

34 Clouds of toxic fumes escaped in a huge chemical factory blaze.

35 A new centre for research on toxic waste was inaugurated today at Imperial College.

36 Every day the environment is further degraded by toxic wastes.

37 The convention established procedures for the transport of toxic waste.

38 Most people do not want this country to become a dumping ground for toxic waste.

39 Plutonium 238 is one of the most toxic substances known to man.

40 The river has been polluted with toxic waste from local factories.

41 Oil spills are common, as is the dumping of toxic industrial wastes.

42 Lead can accumulate in the body until toxic levels are reached.

43 Crops are sprayed with highly toxic chemicals to prevent insect damage.

44 Cadmium is a toxic waste product of the electronics industry.

45 Army scatter-spray these toxic chemicals from planes.

46 They produce chemicals that are toxic to their pests.

47 Toxic waste is being dumped into the ocean.

48 Residents are concerned that toxic waste may be dumped.

49 Toxic liver injury: hospital admissions 1992-93.

50 We don't know whether the dust is toxic.

51 But what about patients who are apparently fit and healthy until they suffer a massive exposure to toxic man-made chemicals?

52 This has been seriously assessed as a way of disposing of nuclear waste, but not toxic waste.

53 Police are warning that the chemicals are highly toxic and anyone who comes into contact with them should seek urgent medical attention.

54 Toxic substances bubble to the surface destroying vegetation[sentencedict.com], turning it brown or fluorescent.

55 If sulphur hexafluoride is subjected to electrical sparking in the presence of oxygen, it degrades, releasing toxic breakdown products.

56 The waste is the most toxic remains of the industrial accident at Seveso in 1976.

57 In May last year Aurul began mixing the toxic dust with water and cyanide.

58 Unlike the gentle technique described earlier, anti-cellulite massage should be vigorous to help drain away toxic wastes from the tissues.

59 Thousands of tonnes of nutrients and uncontrolled quantities of toxic chemicals used to treat fish disease are pumped into lochs each year.

60 In the United States, volunteers are shooed away from spill cleanup, deemed too toxic for unprotected citizens.