Surus's Terms


Biology; Ecology

An extensive, uncultivated tract of level or rolling grassland with no or few trees. Its soils are usually fertile.


Biology; Ecology

The iron-bearing protein/pigment in red blood cells that tranports oxygen to the cells.


Biology; Ecology

A daptive changes in the genetic characteristics of a population over time--but this adaptation is not necessarily “improvement.” This entry says "Evolution" and not "Evolutionary ...

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