Complex sentence: He did his undergraduate studies in agriculture at the University of Kentucky, graduating in 1966, earned a masters degree from the University of Texas School of Public Health in 1971, and finished a doctorate from the same institution in 1975.
Split into simpler sentences: He did his undergraduate studies in agriculture at the University of Kentucky, graduating in 1966. He then earned a masters degree from the University of Texas School of Public Health in 1971, and finished a doctorate from the same institution in 1975.