Complex sentence: Lake Tana is fed by the Lesser Abay, Reb and Gumara rivers; and its surface area ranges from 3,000 to 3,500 km,² depending on season and rainfall.
Split into simpler sentences: Lake Tana is fed by the Lesser Abay, Reb and Gumara rivers. It's surface area ranges from 3,000 to 3,500 km,² depending on season and rainfall.