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science def.
Question | Answer |
---|---|
mammal | vertebrates with 4 chambered hearts and fur on their skin |
mammary gland | milk producing organs |
diaphram | located on the bottom of the ribs; it is for the mammals to breath |
monotremes | egg-laying mammals |
marsupials | are mammals whose young are born at a early stage development, they finish growing in a pouch |
gestation period | the length of time between fertilization and birth |
placental mammal | develops inside its mother body until its body system can function indepedently |
placenta | an organ in a pregnant female mammals body |