According to the study book "come learn with me: what fossils tell us,” how many sections of time make up geologic time?

Where the main factor that enabled the growth of cities and civilizations was the existence of

The amazon river is in africa true or false

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.