A major evolutionary step that allowed the first reptiles to succeed on land was development of the _______.
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Q109: Home pregnancy tests detect the presence of
Q110: The _ of the human male contains
Q111: The uterus opens into the vagina at
Q112: Several days after her due date, a
Q113: In a mammalian ovary, a _ consists
Q115: Ovoviviparous animals are similar to oviparous animals
Q116: A woman who recently gave birth is
Q117: The enzyme-containing cap at the front of
Q118: Most mammalian females (though not humans) have
Q119: The corpus luteum secretes the hormones estrogen
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