| A | B |
|---|
| adaptation | anything that helps an animal survive in its environment |
| scales | covers the skin of most fish and reptiles |
| camouflage | adaptations that enable an animal to blend with its environment |
| countershading | adaptation in which top and sides of an animal are different colors |
| mimicry | adaptation in which one animal looks like another |
| inborn behavior | behavior that is not learned |
| nest building | an example of instinct |
| learned behavior | a behavior caused by experience |
| behavior of animals living together in an organized way | social behavior |
| territory | an area that is defended by one or more animals |
| covers skin of all mammals | hair |
| an example of reflex | blinking |
| vibration | back and forth movement of an object |
| the loudness of a sound | volume |
| highness or lowness of a sound | pitch |
| the speed of a vibration | frequency |
| space that contains no matter | vacum |
| caused by reflected sound | echo |
