Mammalian digestive tracts
Mammalian digestive tracts
Mammalian digestive tracts
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Kelp forests are rich,<br />
diverse marine<br />
habitats.<br />
Sea urchins graze on<br />
algae, including kelp.<br />
Sea otters eat a variety<br />
of molluscs, including<br />
sea urchins.<br />
No sea otters, urchins increase<br />
and devastate kelp... leave a<br />
marine desert.<br />
Sea otters present, keep urchin<br />
numbers down, and kelp forest<br />
thrives.<br />
Killer whales eat otters, kelp<br />
declines!
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