1 Khalid is intrigued by how the towns and cities in his region are interconnected and influenced by each other. What historical geographer would be MOST useful for Khalid to study? A. Evelyn Stokes B. Walter Christaller C. Doreen Massey D. Carl Sauer​

Tides are caused by a differences in the gravitational force of the sun at different points on earth. differences in the gravitational force of the moon at different points on earth differences in earth’s gravitational field strength at different points on earth’s surfac fluctuations in the gravitational attraction between earth and the moon.