| A | B |
|---|
| asexual reproduction | reproduction that involves only one parent and parent produces offspring that are identical to parent. |
| sexual reproduction | reproduction in which sex cells from two parents unite to produce offspring that share traits from both parents. |
| external fertilization | the union of sex cells outside the bodies of the parents |
| internal fertilization | fertilization of an egg by sperm that occurs inside the body of a female. |
| pollinate | the transfer of pollen from the male reproductive structures to the female structure of seed plants. |
| innate behavior | an inherited behavior that does not depend on the environment or experience |
| learned behavior | a behavior that has been learned form experience |
| territory | an area that is occupied by one animal or a group of animals that doe not allow other members of the species to enter. |
| hibernation | a period of inactivity and lowered body temperature some animals undergo in winter as a protection against cold weather and lack of food |
| estivation | a period of inactivity and lowered body temperature that some animals undergo in summer as a protection against hot weather and lack of food |
| adaptation | a characteristic that improves an individual's activity to survive and reproduce in a particular environment |
| natural selection | the process by which individuals that are better adapted ot their environment survive and reproduce more successfully than less well adapted individuals do. |
