Example sentences of "to explain why it is [that] " in BNC.

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1 It is difficult to distinguish cause and effect ; and even if we could be sure that the low level of orienting in the pre-exposed subjects was responsible for their retarded conditioning , it would still be necessary to explain why it is that the OR should return when reinforced training begins .
2 Bumble-bees do not have advanced knowledge of aeronautical science , yet some extremely complicated maths is required to explain why it is that a bumble-bee can fly .
3 In addition , they help to explain why it is that the average length of custody imposed by the higher courts is a historically proven index of prison population generally , once allowance has been made for changes in the level of recorded crime ( Home Office , 1956 ; but cf.
4 Finally , and perhaps most importantly , this account fails to explain why it is that the forms of state intervention have shown tremendous variability in capitalist economies and why it is that not every country had the same welfare and interventionist economic policies .
5 The investigators also seek to explain why it is that whatever the complexion and resolve of the government of the date , public spending has apparently irresistible momentum .
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