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(31) CFC is just one chemical that depletes the ozone layer.

(32) If, for any reason, the stratospheric Ozone Layer becomes thin, its effectiveness as a barrier to UV rays decreases.

(33) Some are deflected by the ozone layer, but others penetrate to ground level.

(34) The destruction of the ozone layer will have a very harmful effect on the environment.

(35) A clear example can be seen in the case of the destruction of the ozone layer, causing the greenhouse effect.

(36) An intact Ozone Layer prevents about 99% of the sun's UV rays from reaching the Earth.

(37) There will be displays on acid rain, the ozone layer and global warming.

(38) The prime minister is still basking in the success of last month's conference on the ozone layer.

(39) That must have a profound effect on the ozone layer.

(40) Most threatening of these for the marine ecosystem is the exposure to increased ultra-violet radiation through the depletion of the ozone layer.

(41) From the standpoint of the ozone layer, there is a quite different way of responding to the allotment phenomenon.

(42) Estimates of the effect of the few Concordes currently in operation are that they have a negligible impact on the ozone layer.

(43) This ozone layer is important to society and the environment for two reasons.

(44) International co-operation on protecting the ozone layer has been good.

(45) The loss of the ozone layer is also believed to be having a cooling effect.

(46) In the most sensitive cases yields were reduced by 1 percent for every 1 percent cut in the ozone layer.

(47) This was seen as essential if such countries were to co-operate in efforts to protect the ozone layer.

(48) This Conservative Government has taken a lead in working to protect the ozone layer.

(49) The depletion of the ozone layer has been one of the most dramatic discoveries about our planet in recent years.

(50) For a start the Protocol does not cover all the chemicals that deplete the ozone layer.

(51) The remainder have escaped into the atmosphere to cause further depletion of the ozone layer.

(52) But because ultraviolet radiation is a constant feature of solar radiation[sentencedict .com], the ozone layer is maintained.

(53) Since 1989 I have measured the ozone layer, solar ultraviolet and the clarity of the air over South-Central Texas.

(54) This chart illustrates the function of the ozone layer.

(55) An international agreement aimed at halting the destruction of the ozone layer.

(56) Media reports dubbed the annual thinning a hole in the ozone layer.

(57) There's no getting away from it - cars spew out a lot of carbon emissions and burn a big hole in the ozone layer, if some scientists are to be believed.

(58) The stratospheric ozone layer, for example, is still getting thinner.

(59) Whether this "age of man" will be short or long is unknown, says Crutzen, who shared his Nobel for unmasking the man-made chemicals eating away at the atmosphere's protective ozone layer.

(60) An asteroid splashdown in one of Earth's oceans could trigger a destructive chemical cycle that would wipe out half of the ozone layer, according to a new study.