Erosion is best defined as . A. the process of rock and soil being carried away by natural forces B. the process of rock being broken down by chemical changes C. the process of rock being weakened slowly over time D. the process of rock being broken down by extreme temperatures

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.