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Biology
WCHS Biology Chapter 31
| Word | Definition |
|---|---|
| Amniotic Egg | major adaptation in land animals; amniotic sac encloses an embryo and provides nutrition and protection from the outside environment |
| Jacobson's Organ | in snakes, a pitlike sense organ on the roof of the mouth that picks up and analyzes airborne chemicals |
| Feather | lightweight, modified scale found only on birds; provides insulation and enables flight |
| Sternum | large breastbone that provides a site for muscle attachment; provides support for the trust and power produced by birds as they generate motion for flight |
| Endotherm | animal that maintains a constant body temperature and is not dependent on the environmental temperature |
| Incubate | process of keeping eggs laid outside of the body warm; also involves periodic turning of the eggs to ensure proper development |