| A | B |
|---|
| diversity | a word meaning different |
| heredity | passing inherited traits from parents to offspring |
| vertebrate | animal with a backbone |
| mimicry | adaptation that allows an animal to look like something else |
| tissue | similar cells that have the same job |
| camouflage | adaptation that allows an animal to look like its surroundings |
| system | a group of organs |
| hybrid | a living thing that has parents very different from each other |
| invertebrate | an animal without a backbone |
| organ | group of tissues working together |
| digestive system | includes mouth, stomach, and intestines |
| arthropods | largest group on earth |
| sponge | a very simple animal |
| reptile | lungs, scales, and leathery eggs |
| learned behavior | train a dog |
| inherited trait | duck's webbed feet |
| mammals | feed their babies milk |
| crossbreeding | can make better corn crops |
| inherited behavior | bird building its nest |
