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The starfish Pisaster ochraceus is a keystone species in the rocky marine intertidal communities off the northwest coast of North America. This predatory starfish feeds on the mussel Mytilus californianus and is responsible for maintaining much of the local diversity of species within certain communities. A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether. This means that if the species were to disappear from the ecosystem, no other species would be able to fill its ecological niche.
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The answer is transcription and translation
Answer:
opposite of el nino (do not have accent mark sadly) the waters around the equator are colder than regular and happens in intervals
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Melting of glaciers and ice sheets will cause coastlines to shrink and increase flooding.
A centriole looks like wafer sticks glued together to make a round long shape.
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