(i added the image)

the image below is a cross-section through the earth's interior. tectonic plates of the lithosphere are shown in grey at the earth's surface. the earth's mantle is shown in red-orange. black arrows in the lithosphere show the directions in which tectonic plates move. red arrows in the mantle represent convection currents. the part of the diagram labeled as "ridge" represents a mid-ocean ridge, where two tectonic plates move away from each other. the part of the diagram labeled as "trench" marks an ocean trench, a location beneath which one plate plunges under another. according to this diagram, convection currents begin to move beneath mid-ocean ridges and begin to move beneath trenches.

a.
upward; upward
b.
downward; upward
c.
upward; downward
d.
downward; downward

Ateam of researchers calculates that a glacier will melt completely away in the next 100 years. which land structure will most likely be left behind after the glacier melts?

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies?

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms