Described is an animal door that is movable between a closed position and an open position and that has an adjustable resistance against the door being removed from the closed position to the open position. The copolymers and degradation products thereof are non-toxic and typically have an LCST between room temperature and 37\xb0 C. The input object creation module is configured to construct an input object including input parameters for the destination web service application based on the message. Scattered electrons are detected to form image data of the specimen showing distinct contrast between regions of different magnetization.