Sentence examples for have persisted only from inspiring English sources

This concept implies that the geochemical conditions conducive to the origin of life may have persisted only as long as the atmospheric CO2 pressure remained above ca. 10 bar.

Since July 2004, cholera has persisted only in lake areas.

The cough, which was present on initial discharge, had persisted but infrequently only to be continuous three days prior to the second admission.

Rare outbreaks have occurred in North Africa, western Asia, and the Iberian Peninsula, where they have persisted for only a few years [ 6].

Descendants of plantation owners may be dismayed to learn how many slaves lived at the properties; in some cases legends have persisted that the families only had loyal servants.

We have reminded them of our fervent desire to go on living without rule or regulation, and yet they have persisted in their belief that only concerted government action can save humanity.

Test plantings of C. mollissima, C. dentata and Castanea hybrids made by the United States Department of Agriculture USDAA) in 1947 55 (Diller et al. 1964) were relocated and evaluated (Berry 1980; Schlarbaum et al. 1994), and only a few have persisted to date.

Although the settlement is only thought to have persisted for a very short time (at around 1000 AD), leaving a brief window for the mice to arrive, we know that house mice did arrive early with Norwegian Vikings in Iceland, based on the archaeological mouse specimens there, and may have arrived similarly early in Greenland and Newfoundland.

Thus, the only way this mutation could have persisted is if our ancestors propagated the seeds themselves.

But troubles have persisted.

But sectarian attacks have persisted.