A contractile vacuole helps protists eliminate excess liquid. This is a "pumping process which reduces pressure inside the cell and prevents the cell from bursting. What is most likely the source of energy for this process?

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.