As it is, a layout that permits natural ventilation and yet does not admit too much outside noise is a minimum requirement.
It is clear, therefore, that the mode of reproduction influences the amount of variation and vice versa; the two together permit natural selection to operate, and selection in turn modifies the mechanisms of reproduction and variation.
The MDA permits natural and economical modelling of design and analysis domains and the relationships between them, supporting both manual and automatic analysis.
But by the 1950s, the church had relaxed that ban to permit natural family planning, which allows couples to schedule intercourse when the woman is not fertile.
The lobby features two-story windows that permitting natural lighting, marble floors, a black-and-white spiral staircase, which looks like a winding piano keyboard.
The scholars contend that if the church permits natural family planning, which is a way to prevent conception, it should realize that other forms of birth control are equivalent.
Their study revealed that F. sylvatica actually invades secondary conifer forests rather fast if forest management permits natural regeneration.
But differential weights are unnecessary in this study because they are measured in monetary units that permit natural aggregation.
When environmental conditions vary across sites, a genotype × environment interaction for fitness may permit natural selection for LA at individual sites (Kawecki and Ebert 2004), resulting in a LIB pattern.
Although the foil is thin in comparison with other methods, and it seems to be an efficient and economical way to record pressure patterns, it is hard to agree that its flexibility is sufficient to permit natural occlusion (Alkan et al. 2006).
Those elements that exist in vast numbers of copies in some species may not be the result of gradual accumulation, but of a sudden burst of proliferation that, for some reason, was permitted by natural selection years ago.
