7) the formula of hollandite is bamn016. what is the oxidation state of mn in this minerale (a) -80% of mn is +2, and 20% is +3 (b) -90% of mn is +4, and 10% is +2 (c) +3 only (d) +4 only (e) one-half is +4, and the other half is +3

answer; i believe that the correct answer is (financial and technology);

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks

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can you send it again

answer ( groundwater);