Extending outwards from the core are the mantle and the crust. Earth's mantle extends to a depth of 2,890 km beneath the surface, making it the thickest layer of Earth. This layer is composed of silicate rocks that are rich in iron and magnesium relative to the overlying crust.
The Parasite: Balantidium coli. Balantidium coli is the only ciliate known to parasitize humans. Ciliates represent a phylum of protozoa characterized, in at least one stage of development, by simple or compound ciliary organelles on the surface of their membranes that are used for locomotion.
Macrobid (nitrofurantoin monohydrate/macrocrystals) is an antibacterial drug used to treat urinary tract and bladder infections caused by Escherichia coli or Staphyloccocus saprophyticus strains of bacteria that are sensitive to this drug.The drug is available as a generic under the name nitrofurantoin.ell your doctor immediately if any of these rare but very serious side effects occur: eye pain, vision changes, mental/mood changes, persistent/severe headaches, new signs of infection (e.g., fever, persistent sore throat), easy bruising/bleeding.