Mediterranean Sea factors. The opening of the Suez Canal in 1869 created the first salt-water passage between the Mediterranean and Red Sea. The Red Sea is higher than the Eastern Mediterranean, so the canal serves as a tidal strait that pours Red Sea water into the Mediterranean. The Bitter Lakes, which are hyper-saline natural lakes that form part of the canal, blocked the migration of Red Sea species into the Mediterranean for many decades, but as the salinity of the lakes gradually equalised with that of the Red Sea, the barrier to migration was removed, and plants and animals from the Red
The 100 Mile Challenge similar challenges. J.B. MacKinnon (James) and Alisa Smith hold an information and recruitment session at a community hall in Mission, British Columbia. Their goal is to educate people on the distance that their food travels from the point of origin to their table as well as to find volunteers willing to take on a challenge where they will only consume food and drink that's been grown and produced within a 100-mile (160 kilometer) radius of their homes. Many people sign up and James and Alisa focus on six families whose progress the series will follow: Clark-Vernon, Hawes, McIntosh, Peters, St.