Across
- 2. Animals can be classified into different groups based on specific ______.
- 4. Many insects and crustaceans are ______.
- 6. Fish, amphibians, reptiles, birds and mammals are all types of ______.
- 8. A classification system to help identify animals.
- 11. Linnaeus sorted all living things into three groups called ______.
- 12. ______ have soft, segmented bodies and no skeleton.
Down
- 1. Whales, cows and humans are all classified as ______.
- 3. What is the name given to all animals that do not have a backbone?
- 5. Insects, crustaceans and arachnids all have ______ on the outside of their bodies.
- 7. Amphibians, ______ and fish are all cold-blooded.
- 9. The scientist Carl _____ was a pioneer of classification.
- 10. These cold-blooded animals live on land or water and have very soft bodies.