What does a marsupial female lack?a.nipplesb.eggsc.a placentad.a womb

The reproductive potential of female primates is low because they often choose not to have offspring.Group of answer choicesTrueFalse

What does the teacher imply about marsupials?a.it's likely that they will go extinct in a few centuriesb.most of them are unable to adapt their environmentsc.there were more of them  in the past than in the presentd.they are less evolved than the majority of other mammals

Although it is often assumed that one of the essential characteristics of mammals is that they give live birth to their young, there are actually two species of egg-laying _____ Ornithorhynchus anatinus, more commonly known as the duck-billed platypus, and Tachyglossus aculeatus, also called a short-beaked echidna or spiny anteater.18Mark for ReviewABCWhich choice completes the text so that it conforms to the conventions of Standard English?Amammals:Bmammals.Cmammals;Dmammals

Monotremes are mammals that ______, while marsupials and placental mammals ______.Multiple choice question.have mammary glands; lack mammary glandslack mammary glands; have mammary glandslay eggs; are live-bearingare live-bearing; lay eggs

The most diverse group of mammals contains species that have a ______, which is a structure inside the mother's uterus that connects maternal and fetal circulatory systems.Multiple choice question.marsupiummammary glandspleenplacenta