Deficiency in rainfall is reflected in an absence of permanent rivers or streams, and the approximately twenty perennial lakes are brackish or salty.
Within Libya as many as five different climatic zones have been recognized, but the dominant climatic influences are Mediterranean and Saharan.
Sunni Islam of Maliki school of jurisprudence is the dominant religion in Libya. Other than the overwhelming majority of Sunni Muslims, there are also small Christian communities, composed exclusively of foreigners. Coptic Orthodox Christianity, which is the Christian Church of Egypt, is the largest and most historical Christian denomination in Libya.