Explain the theory of plate tectonics and how they have changed Earth's surface over time. Include the role of plate tectonics in the creation of landforms.

Can someone me with this plz? ! i'm putting 20 points on it!

Which statement best describes how chemical equations demonstrate conservation of mass?

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.