Further it is relatively insensitive to the levels of precipitation; a 'qanat' typically delivers a relatively constant flow with only gradual variations from wet to dry years.

A gradual variation in the Earth's electric field some time before an earthquake.

It developed by gradual variations on the majuscule (capital) form.

Before this point in time, a gradual variation in the concentration of A occurs along an axis, designated x, which joins the original compartments.

The criteria for classification may be arbitrary if they ignore gradual variation in traits.

Therefore, most of the heritable variation cast up by mutation is of minor eect, and gradual variation is persistent grist for the selection mill.

However, there is no genetic information confirming the validity of the three subspecies, which may simply represent a cline, with gradual variation between the three forms.

In ecotypes, it is common for continuous, gradual geographic variation to impose analogous phenotypic and/or genetic variation.

The gradual variation over geographic range and extensive intergradation means that acceptance of the various subspecies varies between authorities.

Furthermore, it is almost insensitive to the levels of precipitation, delivering a flow with only gradual variations from wet to dry years.