Smartphones contain more than 60 minerals that are obtained from mines., Yes., No., Habitat destruction is one of the main issues of mining activity., Yes., No., 63% of gold is used in jewelry, 21 % in coins, 15% per cent in industrial uses including electronics; and 1 % in dental., Yes., No., Gold was one of the first metals to be discovered., Yes., No., The world's biggest open-pit mine is currently in Argentina., Yes., No, it´s in Utah., Argentina doesn't produce more than 10 tons of gold per year., Yes., No, it produces 55 tons a year.

Mining

さんの投稿です
印刷
埋め込み

リーダーボード

表示スタイル

オプション

テンプレートを切り替える

自動保存: を復元しますか?