1. ____________________ are the actions of an organism to stimuli based on input from their senses.
 
2. Nest-building in birds is a good example of _______________________________.
 
3. ___________________________________________ are gained by experience.
 
4. Animals migrate to escape ______________________________________________.
 
5. The ________________________ of hibernating animals drops to extremely low levels.
 
6. _________________________ is a way some animals escape extremes in hot, dry weather.
 
7. The key factor in the foraging behavior of predators is _______________________________.
 
8. Complete metamorphosis enhances the chance of survival for insects because the larval and adult stages____________________________________________________.
 
9. The case surrounding the pupa of butterflies is called a _________________________.
 
10. The case surrounding the pupa of moths is called a ____________________________.
 
11. A nymph looks similar to the adult insect but does not have _________________________________.
 
12. No amphibians live _____________________________.
 
13. Amphibians need cutaneous respiration because ________________________________________.
 
14. The process by which larva-like salamanders reproduce is called _______________________.
 
15. The embryonic fluid of an amniote is surrounded by a membrane called the _______________________.
 
16. ______________________ birds lay few eggs and incubate them for a short period.
 
17. Oviparous mammals are ____________________________.
 
18. The only viviparous mammal in the U.S. is the ___________________________.
 
19. The most successful group of mammals are the _________________________ mammals.
 
20. ________________________ foraging brings a predator the maximum net food energy gain.