Question: Which meridian extends across Europe, the Mediterranean Sea, Africa, Asia, the Pacific Ocean, North America, and the Atlantic Ocean?
Sentence (from "Permanent Maghreb"): The ecoregion is bounded on the north by the Atlantic Ocean and Mediterranean Sea, and to the south, by the Temporary Maghreb freshwater ecoregion, which covers the northern portion of the Sahara and is characterized by temporary or seasonally-flowing rivers and streams.
Relevant evidence: No