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The primary driving force behind evolution is the environmental pressure, which encourages or discourages certain physical or behavioural adaptations to best fit the environment.
Selection is not always of the most fit to survive.
Vitamins and minerals are required for proper growth and functioning of organs, just like they are one of the essential components for the growth ,and being fit.
no, you are to be able to stick your pinky through the bow and horse hair,a nice fit.
bough I think "beau", would be a better fit.
Clean, fit, and proper.
If you don;t fit your environment you either leave or die.
Natural selection
For a proper fit of a protective mask, you should take a Fit test. If the mask fits properly it will not allow air from the outside into the facepiece no matter the position of the head.
It's the Jewish meaning of fit and proper.
determine proper fit -- if the lens remains deflected, this give an indivation of an initial proper fit
Neither artificial or natural selection. Chocolates, even variant chocolates, do not fit the criteria needed for either type of selection. No fidelity or fecundity.