| A | B |
|---|
| incubate | to keep an egg or newborn animal warm |
| contour feathers | the strong feathers that give birdss their coloring and sleek shape |
| down feathers | the soft feathers that insulate and cover the skin |
| preening | a behavior of birds uses its beak to fub oil over its feathers to condition them and make water repellent |
| mammals | wam-blooded vertebrate thate have hair and produce milk too feed their young |
| mammary galnds | ppproduce milk |
| herbivors | plant eaters |
| conivores | meat eaters |
| omnivors | meatand pant eaters |
| placental mammals | a mammal whose young devolp inside femalein |
| gestation period | embryo devolps to uterus |
| placenta | part of the sac that surrounds an embryo in mammals |
| umbilical cord | attaches to embryo to the placenta |
| mersupials | pouched mammals that give birth to tinymmature offspring |
| monotremes | mamals lay eggs |
| manatees | large mammal belonging to t he order of sirena |
| poaching | illegal hunting |
