nodal point One of two point’s in a compound optical system so related that a ray directed toward the first point will appear to have passed through the second point parallel to its original direction. Synonym: axial point...
Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..
