A system to unambiguously describe the configurations of molecules with more than one asymmetric center was devised in 1956 by Robert Cahn, Christopher Ingold, and Vladimir Prelog. In the Cahn–Ingold– Prelog or RS system

TLS Online TPP Program

#Id: 8228

#XL - T Zoology

Spatial structure - The pattern of density and spacing of individuals in a population.

TLS Online TPP Program

#Id: 8229

#XL - T Zoology

Population distributions have five important characteristics

Geographic range

Abundance

Density

Dispersion

Dispersal

TLS Online TPP Program

#Id: 8230

#XL - T Zoology

The geographic range of a species includes all the areas its members occupy during their life.

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#Id: 8231

#XL - T Zoology

Endemic species - Species that live in a single, often isolated, location.

Cosmopolitan Species - with very large geographic ranges that can span several continents.

TLS Online TPP Program

#Id: 8232

#XL - T Zoology

Dispersion of a population describes the spacing of individuals with respect to one another within the geographic range of a population

TLS Online TPP Program

#Id: 8233

#XL - T Zoology

Populations of any species can grow at an incredibly rapid rate, given the right conditions.