Reuters NEW YORK (Reuters) -Environmental groups are asking Procter & Gamble Co investors to vote against re-electing its chief executive as board chair, and also opposing two other directors at the annual meeting next month, according to a filing that claims the company uses too much virgin wood pulp in its paper products. Environmental nonprofits including the Natural Resources Defense Council (NRDC) have targeted the maker of Bounty paper towels and Charmin toilet paper over the last few years, and are also calling on the consumer products company to clean up how it sources palm oil from tropical rainforests. NRDC,…