Complex sentence: Because of Dhaka's heavy reliance on river transport for goods, including food, the Buriganga receives especially high amounts of food waste since unusable or rotting portions of fruits, vegetables, and fish are thrown into the river.
Split into simpler sentences: Because of Dhaka's heavy reliance on river transport for goods, including food, the Buriganga receives especially high contact with food waste. Unusable or rotting portions of fruits, vegetables, and fish are thrown into the river.