Question

which type of plate boundary is characterized by plates sliding past each other horizontally?convergent boundarydivergent boundarytransform boundarysubduction boundarythe process where one tectonic plate is forced beneath another into the mantle is known as:plate divergencesubductioncontinental driftseafloor spreading

Explanation:

For the first question: Convergent boundaries involve plates colliding, divergent boundaries involve plates moving apart, transform boundaries involve plates sliding horizontally past each other, and subduction is a process at some convergent boundaries.
For the second question: Plate divergence is plates moving apart, subduction is one plate being forced under another into the mantle, continental drift is the overall movement of continents, and seafloor spreading is new crust forming at divergent ocean boundaries.

Answer:

1. Transform boundary
2. Subduction