The predators were unable to keep the population of the mussels down. The mussels took more area of the rock. Other species that needed space did not return to the tidal pool. Otters can also be keystone species as they eat urchins. By doing so, they prevent the sea urchins form eating all the kelp plants and removing the entire habitat for many other species. The Keystone Species theory shows that this impact of few predators, that made up a minor amount of the total species, could have such a high impact on the ecosystem.

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The volcanoes of northeastern California — Lassen Peak, Mount Shasta, and Medicine Lake volcano — along with the rest of the Cas

daser333 [38]

The type of plate boundary referred here is defined as an ocean-Continent Convergent Plate Boundary.

<h3>What is an ocean-continent convergent plate boundary?</h3>

An ocean-continent convergent boundary is a limit in which the oceanic plate is forced underneath the continental plate.

This type of boundary occurs when an oceanic lithospheric plate crashes against to a continental plate.

In conclusion, the type of plate boundary here is defined as an ocean-Continent Convergent Plate Boundary.

Learn more about Convergent Plate Boundaries here:

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