Miners, energy shares drag FTSE 100 lower reuters_tickers 2 minutes By Purvi Agarwal and Roshan Abraham (Reuters) – Britain’s FTSE 100 closed lower on Tuesday, pressured by commodity-linked stocks which tracked declines in prices of oil and copper, while positive earning updates from companies helped offset declines. The blue-chip FTSE 100 index was down 0.4%, after logging its best session in over a week on Monday. The mid-cap FTSE 250 was down 0.2%. Industrial metal miners fell 1.9%, with heavyweights like Rio Tinto and Glencore slipped over 1.5% and 2.2% each as concerns of weak Chinese demand weighed on prices...