Example sentences of "change over [art] past [num] years " in BNC.
Next page| No | Sentence |
|---|---|
| 1 | But unless there have been marked changes over the past 30 years in insolation , the quantum efficiency of phytoplankton photosynthesis , or rates of nutrient supply , interannual changes or lack thereof , in chlorophyll ( which we inferred from interannual changes in Secchi depths ) will reflect interannual variations in primary production in the North Pacific or any other ocean basin . |
| 2 | In a special commemorative issue , Pavel Litvonov , a Soviet dissident now living and working in the USA , reflects on the changes over the past 20 years . |
| 3 | The public relations exercises of the LDDC have undergone a marked change over the past two years . |
| 4 | The change over the past 2,700 years means days have been getting longer at an average rate of 1.7 milliseconds per 100 years . |
| 5 | He had not been able to identify any change over the past 50 years which could be linked with the economic policy of any party . |