What did Harry Hess discover that helped prove that tectonic plates are moving?

Ahill is made of rock particles of different sizes. which of these agents of erosion probably causes the hill to form? a- waves b- glacial ice c- wind d- flowing water

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?

Which of the following is the major contributing factor in all landslides? stream erosion precipitation earthquakes gravity sedimentary layers oriented parallel to the slope