Are the densities of the planets roughly proportional to their diameters? Use evidence to support your claim.

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions

What are the two functions of the respiratory system

4.explain how these geological processes and interactions have changed earth's surface through the years. be sure to use evidence to support your answer • earthquakes • faults • ocean formation • mountains • volcanoes • island chains • seafloor spreading