I think the answer is Telaphase.
Answer:
They help transport materials that an organism needs to survive and they recycle waste materials.
Explanation:
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Melting ice caps and glaciers
Answer:
In Amoeba and Paramoecium, osmoregulation occurs through contractile vacoule. Osmoregulation is a phenomenon in which contractile vacuole plays an important role in maintaining the water balance of the cell. Paramoecium contains two contractile vacuoles which have fixed position.
One, if more than one variable changes in an experiment it will not be possible to tell which is responsible for any changes in the dependent variable, so the experiment will not be very informative.
