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.
Infection caused by the Parasite Balantidium, Infection that causes Diarrhea - Giardiasis, Clostridium difficile colitis, Infection caused by the Roundworm Dracunculus, Infection Around a Tooth, Ulcer of Duodenum caused by Bacteria Helicobacter Pylori, Peptic Ulcer due to Bacteria Helicobacter Pylori, Inflammation of the Stomach Lining caused by H. ...