<prompt> When ICF and ECF of child become to adult person -1 year2 year3 year4 year  <response>: Ans. is a i.e., 1 year o Fetus has very high TBW Total body water and gradually decrease to approx 75 of BW for term infant,o Preterm infant have higher TBW.o During ist year of life, TBW decrease to approx 60 of body Equal to adult.o TBW is divided bw 2 main compartment ICF ECF. In future ECF is larger then ICF.o By age of 1 year ratio of ICF volume to the ECF volumes. Approches adult level. 