What are the three types of plate boundaries that affect marine geography?

The three types of plate boundaries that significantly influence marine geography are divergent, convergent, and transform boundaries.

Divergent boundaries occur where tectonic plates move apart from each other, leading to the formation of new oceanic crust as magma rises from beneath the Earth's surface. This process creates features such as mid-ocean ridges, which are crucial for understanding oceanic geology and ecology.

Convergent boundaries, on the other hand, occur when two plates collide, leading to subduction or continental collision. This can result in the formation of deep ocean trenches, volcanic arcs, and mountain ranges, all of which dramatically alter marine landscapes and ecosystems.

Transform boundaries happen when plates slide past one another horizontally. This lateral movement can cause earthquakes and impacts the geological stability of the ocean floor, reshaping the marine environment over time.

Understanding these boundary types is essential for studying various geological phenomena and their effects on marine ecosystems and coastal processes. The other options do not reflect the fundamental interactions between tectonic plates that are critical to oceanography.