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Nutrients that are needed for normal growth and maintenance and that must be supplied in the diet are called ____________.
Q12: The atrioventricular valves separate the atria from
Q13: The three ethologists who were awarded the
Q22: The major nitrogenous waste excreted by the
Q24: The most characteristic gut movement is _.
Q27: The causative agent of AIDS is _
Q47: Amniotes arose from the _ during the
Q56: Many hormones,upon arriving at a target cell,combine
Q62: Of the two kinds of mammalian sweat
Q68: The fertility cycle of the female mammal
Q85: The _ was established in 1945 by