any specific behavior | a light, self-propelled movement upwards or forwards |
the trait of being active; moving or acting rapidly and energetically | taking a series of rhythmical steps (and movements) in time to music |
an organic process that takes place in the body | (genetics) a mutation that drastically changes the phenotype of an organism or species |
a process existing in or produced by nature (rather than by the intent of human beings) | an abrupt transition |
the state of being active | (geology) the leaping movement of sand or soil particles as they are transported in a fluid medium over an uneven surface |
(chemistry) the capacity of a substance to take part in a chemical reaction | |