3. Have hair Use milk for young through Mammary glands Four-chambered heart Endothermic

4. Temperature control Layer of fat under skin Sweat glands together  homeostasis Feeding Specialized teeth

6. Circulation Highly specialized four-chambered heart Respiration Lung intake regulated by diaphragm muscle around lungs that causes them to inflate Excretion Kidney function to filter out urea (waste) and regulate water levels in body

7. Response Cerebral Cortex!!! Allows for higher-level though ex. Reading, decisions, etc. Movement back with flexible vertebrae specialized pelvic girdles for specific movements

8. 3 types, classified by way animals develop Monotremes egg-laying mammals duckbilled platypus Marsupials development finished in puch kangaroo Placental mammals all that give birth to live young horse, whale, mouse, dog, primates

9. Have a well-developed cerebrum allows for more complex behavior fingers, toes arms with ball-in-socket joint that can rotate freely binocular vision (suggests need for depth perception) Genus Homo fossils show in Africa about 2.5 million years ago Homo sapiens “Out of Africa” model evolved in Africa 200,000-150,000 years ago left Africa in many migrations supported by mitochondrial DNA samples showing a common ancestor