    Sentence" b: What - . two  environmental conditions. °.are:  controlled in, *~ the museum?    Sertpsice “2: Activities,  jiniclidé controlling ‘the'mvseum:  jen-vironinent for ".. example,    femperatire: and.’ ‘lighb.. ‘and  preventing’ posts.’ (primarily:  insécks) from: .. damagirig  artefacts: :