Sentence examples for this are unclear from inspiring English sources

However, the consequences of this are unclear.

"The reasons for this are unclear but it is possible that perceptions of lower vaccine effectiveness last year may have influenced people.

Evidence is increasingly supporting a link between social media use and wellbeing, particularly during adolescence, but the causes of this are unclear".

Breeding a bit earlier in the season or having the pups farther north could ensure that populations do not decline further, although the prospects for this are unclear.

The reasons for this are unclear.

The mechanisms underlying this are unclear.

The reasons for this are unclear, but have been observed in other similar studies [3].

Empirically, student satisfaction does not match academic achievement but the reasons for this are unclear.

The incidence of testicular cancer has increased markedly in most developed countries, although the reasons for this are unclear.

The reasons for this are unclear, but could possibly be related to the definitions of positive scans which vary from study to study.

The reasons for this are unclear, although it may be due to the technical error associated with the lactate analyser used in this study [37].