Sentence examples for erratic occurrence from inspiring English sources
Although attempts to use the creek and its watershed as a municipal water source date to the early 20th century, the water it provided was of poor quality and erratic occurrence.
Erratic occurrence and variegated phenotypes are commonly reported phenomena of transgene silencing and have been shown in many different plant species [ 22, 25, 27, 29, 71].
Such changes can be accompanied, although not necessarily, by cross-species transmissions; thus, the erratic occurrence and unpredictable new disease manifestations of tropism switching are a matter of public health concern.
Transgenic wild tobacco plants (Nicotiana attenuata) expressing heterologous genes coding for antimicrobial peptides displayed an erratic and variable occurrence of transgene silencing.
The bacteria are considered maternally transmitted, but their occurrence is erratic among Formica species and can vary within species depending on nutritional status [ 12].
Nonetheless, a major constraint is the complex and erratic nature of groundwater occurrences in crystalline basement terrains with attendant high rate of well/borehole failure in the absence of proper and adequate pre-drilling hydrogeological investigations.
Due to complex and erratic nature of groundwater occurrences in crystalline basement terrains, groundwater development in form of boreholes/wells without the necessary pre-drilling hydrogeological investigations usually results in failure.
The widespread occurrence of glacial erratics, containing microfossils of Cretaceous and Cenozoic age, is an indication of the presence of rocks that are younger than the Beacon Sandstone lying underneath ice sheets near the Transantarctic Mountains.
This is due to erratic and localised nature of groundwater occurrence in subsurface rock discontinuities and within the weathered unit (Offodile 2002).
Comebacks were Manning's forte this season, virtually a regular occurrence as the Giants endured erratic performances in nearly every other facet of their game.
