Water does not contain any fiber at all, but does not cause constipation. Neither does water with sugar. Pure fat does not contain any fiber either, whilst it keeps the bowels open. In fact: Too much of anything that does not cause constipation (like sugar and fat), moves the bowels.
Definition of rigatoni for English Language Learners. : a type of pasta that is shaped like short, wide tubes.
megatonne (Mt) a metric unit of mass or weight equal to one million metric tons (tonnes), one teragram (Tg), or about 2.2046 billion pounds. megawatt (MW) a common metric unit of power. One megawatt is equal to one million watts, about 1341.02 horsepower, or 947.817 Btu per second. megawatt hour (MWÂ·h)