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Hipervinculo Geología
The soil composition in people’s backyards containsminute particles of magnetic material called rare-earth metals.Larger quantities of rare-earth metals lie in deep underground.The particles belong to ...
Hipervinculo Química
The air is made up of about 21 percent oxygen. This science projects allows you to find this percentage for yourself through examining a chemical reaction between oxygen and rust.It is an educational ...
Concept of vectores: composition
The soil and its structure
The study of rocks and minerals
Concept of what are vectors?
The study of rocks and minerals
The soil and its structure
The study of soil and its composition as one of the elements of the landscape, reflecting on its depletion and pollution.
The study of soil and its composition as one of the elements of the landscape, reflecting on its depletion and pollution.
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