In 1983, the metre was redefined in the International System of Units (SI) as the distance travelled by light in vacuum in 1/ 7008299792458000000â 299792458 of a second. As a result, the numerical value of c in metres per second is now fixed exactly by the definition of the metre.
Blattodea is an Order of insects containing the cockroaches. Cockroaches first evolved around 350-300 million years ago and are probably one of the most despised of all insects. For some people the mere mention of cockroaches will send them running for cover.
bodâ¢y /ËbÉdi/USA pronunciation n., pl. bodâ¢ies, adj. n. Anatomy[countable] the complete structure of a person, animal, plant, or other organism. Anatomythe main portion of a person or animal, comprising the trunk but not the head, arms, and legs. , Anatomy, Zoologya corpse:The body was cremated.