Breathing, moving blood throughout the body, and so forth.
Answer: A mollusk accidentally imported from Europe. They clog pipes and water ways.
Explanation:
Answer:
3) Temperature
4) gill covering opening and closing per minute
5)as temperature rises, the rate of gill covering opening and closing per minute increase until the temperature reaches 27℃ where the rate decreases
Explanation:
4) you can adjust and control the temperature in an experiment
5) you can't control the gill opening and closing rate
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