If today's maximum temperature was 14 degrees celsius and tomorrow's maximum is expected to be 28 degrees celsius will tomorrow be twice as hot as today? No. If it is zero degrees today, and 1 degree tomorrow, will it be infinitely hotter? Better to not use the concept.
Internally, slug anatomy clearly shows the effects of this rotationâbut externally, the bodies of slugs appear more or less symmetrical, except for the positioning of the pneumostome, which is on one side of the animal, normally the right-hand side. Slugs produce two types of mucus: one is
Slugs live on land and in saltwater, and one genus, Acochlidium, lives in freshwater. The unadorned word slug, however, is applied primarily to land slugs, whereas slugs from the sea or from fresh water are usually referred to as  sea slugs  or freshwater slugs.he bottom side of a slug, which is flat, is called the 'foot'. Like almost all gastropods, a slug moves by rhythmic waves of muscular contraction on the underside of its foot. It simultaneously secretes a layer of mucus that it travels on, which helps prevent damage to the foot tissues.