| A | B |
|---|
| embryo | the new chick developing inside the egg |
| environment | The physical surrounds of an organism |
| adapted | fitted by structure and behavior for a certain environment |
| structure | the way something is "build" or put together |
| warm-blooded | having a body temperature that stays about the same regardless of temperature of surroundings |
| reproduce | to make more of the same thing |
| migration | the traveling of certqin animals from one environment to another and back again |
| life cycle | the series of changes an organism goes through from birth or conception to death |
| spawn | to lay eggs (fish) |
| sperm | the cell from the male that joins with a female cell to begin a new organism |
| fertilized | when a sperm joins with the egg causing a new living organism to develop |
| parr | the young of the salmon that lives in the river |
| smolt | the young salmon that leaves the river for the sea |
| oxygen | the element of air that is needed for life and burning |
| lungs | body parts by which animals take in oxygen from the air |
| gills | structures in a fish that take in oxygen from the surroundings |
| behaviors | what living things do in adapting to their environment |
| inborn | within a living thing at birth, such as behaviors |
