1. Homeostasis

2.  The maintenance of a stable internal environment within an organism

3. Behavioral adaptations to maintain? panting molting

4. How do we maintain?  Humans? Why do we need to do these things? (answer to come!)

5. Diurnal  An organism’s behavior characterized by activity during the day and sleeping at night.

6. Diurnal animals

7. Nocturnal  An organism’s behavior characterized by activity during the night and sleeping during the day.  Traits include: sensitive vision (usually large eyes, sensitive hearing, sensitive smell)

8. Nocturnal Animals Tarsier (tar-sea-er) Aardvark

9. Endotherm  Animals that actively maintain a stable body temperature by generating heat  Humans, birds and mammals  “Warm-blooded”

10. Ectotherm  Animals whose body temperature changes with their environment  Most animals: reptiles, fish, insects  “Cold-blooded”

11. How to stay Warm/Cool? Endotherm: - Maintain internal temperature - Burn a lot of calories doing this - Need fur/fat/shelter to stay warm - Need water/mud/cold weather to stay cool Ectotherm: - Change temperature with environment - Change position or location based on outside temperature - Much more behavioral ways to maintain

12. What am I? (endo or ecto – therm?)