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4) Which of the following is involved in removing undigested food out of the body?
A. excretio B. perspiration C. exhalation D. urination
5) Which of the following is a correct sequence?
A. digestion, ingestion, assimilation, absorption
B. digestion, ingestion, absorption, assimilation
C. ingestion, digestion, assimilation, absorption
D. ingestion, digestion, absorption, assimilation​