Определите в предложениях:сложное дополнение;сложное подлежащее;абсолютная причастная конструкция 1. The average grade of copper ores in the 21st century is below 0.6% copper, with a proportion of economic ore minerals being less than 2 % of the total volume of the ore rock. 2. Coal was known to be used in England already in the XII century. 3. Scientists found the Romans to employ three techniques to recover the metals. 4. Some specialists consider it to be an intrusive igneous complex. 5.With the old creation destroyed, terrestrial crust had to be formed, by massive underwater intrusions. 6. We all know gold to conduct both heat and electricity and not to rust.

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