Answer:
C
Explanation:
During their development, many organisms look similar, suggesting that very different organisms may have a common ancestor. - Think of the human fetal neural / spine development which mirrors other species.
You get dizziness, headache, trouble concentrating and blurred vision
C, because the clown fish is benefiting from the sea anemone while the anemone gains nothing or harmed <span />
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I believe that would be an open system.