Answer:
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.
Explanation:
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Answer:
Which would be a measure in determining body composition?
amount of water excreted a day
amount of protein consumed
the percentage of fat in the body
the percentage of sugar consumed
Explanation:
its kinda hard let me check i think ?c
The population would decrease because the high death rate and low other rates would lead to more deaths than births, and not many other people would be entering the country/place, so the population would decrease
A, D, and F because if biotic once it dies it doesnt lose the biotic factor.
