Science chapter 15 Crossword
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
 
 
Down: 1) Soft fluffy feathers that provide an insulating layer next to the skin of adult birds and that cover the bodies of young birds4) Animal that eats plants and animals or animal flesh; mammals with incisors canine teeth and flat molars for eating plants and other animals.5) Comnects the embryo to the placenta; moves food the placenta ti the embryo and removes the embryos waste products 7) Endothermic vertebrates that have hair teeth specialized for eating certain foods and mammary glands. In females mammary glands produce milk for feeding their young 8) Strong lightweight feathers that give birds their coloring and shape and that are used for flight10) An organ that develops from tissue of the embryo and tissues that develop from tissues of the embryo and tissues that line the inside of the uterus and that absorbs oxygen and food from the mothers blood. Across: 2) Animal that eats only other animals or the remains of other animals mammals having large sharp canine teeth and strong jaw muscles for eating flesh3) A mammal that lays tough leathery shells and whose mammary glands Sony have nipples6) Vertebrate animal with a nearly constant internal temperature 9) Perood during which an embryo develops in the uterus; the length of time varies among species11) A mammal with an external pouch for the development of its immature young12) Process on which a bird rubs oil from an oil gland over its feathers to condition them13) A mammal whose offspring develops inside the females uterus14) Animal tagt ears only plants or parts of plants; mammals with large premolars and molars or eatin only plants.15) Glands if mammals in females produce milk for feeding their young
 

 

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