any specific behavior | the act of choosing or selecting |
the trait of being active; moving or acting rapidly and energetically | the person or thing chosen or selected |
an organic process that takes place in the body | a passage selected from a larger work |
a process existing in or produced by nature (rather than by the intent of human beings) | an assortment of things from which a choice can be made |
the state of being active | a natural process resulting in the evolution of organisms best adapted to the environment |
(chemistry) the capacity of a substance to take part in a chemical reaction | |