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6. The binomial system gives everything a two-part Latin name, what does the second part refer to?
7. Are mammals homeotherms (warm-blooded)?
8. How do birds, fish and amphibians absorb OXYGEN.
- Birds: Skin, Fish: Lungs, Amphibians: Gills
- Birds: Lungs, Fish: Gills, Amphibians: Skin
- Birds: Gills, Fish: Skin, Amphibians: Lungs
9. In a ring species can population 3 interbreed with population 1? And vice-versa...
10. What are the classes (groups) that vertebrates are divided in?
- Birds, mammals.
- Fish, amphibians, reptiles, birds, mammals.
- Reptiles, birds, mammals.