Main article: Cell membrane. The cell membrane, or plasma membrane, is a biological membrane that surrounds the cytoplasm of a cell. In animals, the plasma membrane is the outer boundary of the cell, while in plants and prokaryotes it is usually covered by a cell wall.
Egypt lies between the Red Sea to the east and the Mediterranean Sea to the north. The Red Sea is a narrow, landlocked sea that separates Africa from the Arabian Peninsula. It links to the Mediterranean through the Gulf of Suez and the Suez Canal.
Pangaea is believed to have been a more-or-less C-shaped landmass that extended across the equator. The body of water that was enclosed within the crescent of the âCâ is the Tethys Sea. The vast ocean that surrounded Pangaea is Panthalassa (Panthalassic Ocean) Pangaea â from Greek meaning âall earthâ. Tethys â from Greek, Tethys a sea godess, wife of Oceanus. Panthalassa â from Greek meaning âall the seaâ.