Complex sentence: Hao, 2006 Urbanization has driven down harvests from a high of 14.1 million pounds (6,400 t) in 1948, but more recently the decline has resulted from pests and diseases.
Split into simpler sentences: Hao, 2006 Urbanization has driven down harvests from a high of 14.1 million pounds (6,400 t) in 1948. But more recently the decline has resulted from pests and diseases.