Muhammad flight from mecca to became known as the hijra and its marks the first year of the islamic calendar

Muhammad flight from Mecca to Yahtrib became know as the hijra and its marks the first year of the Islamic calendar.

Lake Michigan has unique conditions that support a wealth of biological diversity, including many plant and animal species found nowhere else in the world. Lake Michigan basin's sand dunes, coastal marshes, tall grass prairies, savannas, forests, and fens all provide essential habitats for this diversity of life.