A look at some noteworthy television this week: Nature: Silence of the Bees (Sunday, 8:00 p.m., WNET 13; Wednesday 8:00 p.m., WLIW 21) The long running PBS nature series Nature takes a look at the recent decline in the honey bee population and the possible consequences of it. Masterpiece Theatre: The Amazing Mrs Pritchard (Sunday, 9:00 p.m., WNET 13) The story of a supermarket manager becomes Prime Minister continues with Mrs. Pritchard facing some hard......