3.4 ответьте на следующие вопросы 1) what is prospecting? 2) what are the three main stages of prospecting? 3) what processes does mining geological exploration include? 4) what does prospecting work provide? 5) is it enough to know only the topographical relief of a locality for exposing this or that mineral? 6) how can prospecting methods be subdivided? 7) what do direct methods include? 8) what indirect methods do you know? 3.5 определите, какие предложения соответствуют содержанию текста 1) the search for economically useful deposits is called proving. 2) the science of geology can explain the manner of occurrence of ore deposits. 3) as a rule prospecting work includes four stages. 4) the study of general topographical relief and the type of ground makes it possible to expose this or that deposit. 5) geologists know that certain deposits are only found in a particular type of ground. 6) as is know, veins are found in metamorphic rocks. 7) geochemical and botanical surveys are among the direct methods. 8) gravimeter is an instrument that can detect an electrical potential of mineral.