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.
What is Balanitis? Balanitis is a health syndrome that involves an inflammation of the tip of the penis or Glans Penis. The term is derived from the Greek word âbalanosâ meaning âacornâ. It is a quite common disease affecting about 3-11% men in the US alone. The disorder can be seen in males of any age group.