'has a primary effect' is correct and usable in written English.
You can use the phrase to indicate that an action or occurrence has a major or most important result. For example, "Smoking has a primary effect on the lungs."
has a primary effect that advances religion.
A tax deduction has a primary effect that advances religion if it is provided to offset expenditures which are not restricted to the secular activities of parochial schools.
Application of CTS in soil has a primary effect on the bacterial communities that, negatively, alter the bacterial diversity and community similarity, while that, positively, it permits to select specific bacterial groups able to resist and biodegrade contaminants.
It has been found that the interaction between the two homopolymers prevents PVDF from crystallization in the blend, the net result of which has a primary effect on the surface properties of the films.
On the other hand, introduction of HSR has a primary effect on one-hour connections and secondary effects on 90-min commutes [69].
Furthermore, we demonstrate that depletion of Ubx during embryogenesis has a primary effect in T3 legs and causes shortening of leg segments that are enlarged in a wild type.
It strongly affected the hardness and the porosity which had a primary effect on the thickness/cycle and the DE values.
The District Court granted respondents' motion for summary judgment, holding that the statute was "neutral on its face and in its application, and does not have a primary effect of either advancing or inhibiting religion". 514 F.
Regarding functional aspects, elevation, as a broad-scale environmental gradient, showed a greater influence on dominant trait values, whereas at finer scales, grazing management had a primary effect on both dominant trait values and diversity measures.
It will have a primary effect on mortality inequality, and also a secondary effect as people respond to the primary effect by increasing their health-promoting behavior.
In addition, using MRI measurements of cerebral blood volume (CBV), Pereira et al. [6] found that exercise in humans had a primary effect on CBV increase in the dentate gyrus, which is the only subregion that subserves adult neurogenesis.
