projets réels postmasburg

Silicate minerals

Silicate minerals are rock-forming minerals made up of silicate groups They are the largest and most important class of rock-forming minerals and make up..

Natural environment

The natural environment encompasses all living and non-living things occurring naturally The term is most often applied to the Earth or some part of Earth..

Bioclimatology and Biogeogra Climate Rain

Bioclimatology and Biogeography of Africa Henry No 235 l Le Houérou Bioclimatology and Biogeography of Africa 123..

Betpakdalite sur Scorodite Namibie mineraux et

Cette épingle a été découverte par Jo Mo Découvrez vos propres épingles sur Pinterest et enregistrez-l..

YVES HERBO

Blog de l auteur Yves Herbo sciences fictions histoire paranormal OVNI UFO archéologie préhistoire environnement astronomie..

Strong interaction

In particle physics the strong interaction is the mechanism responsible for the strong nuclear force also called the strong force or nuclear strong force and is..

Electromagnetic field

An electromagnetic field also EMF or EM field is a physical field produced by electrically charged objects It affects the behavior of charged objects in the..

General contractor / Home Improvement

The general contractor is a manager and possibly a tradesman employed by the client on the advice of the architect engineer or the architectural technologist or..