A female cockroach spawns many eggs sufficient for the birth of 180 cockroaches in 303 days. Assuming that one half of these young ones are females, then in another three hundred days the number of cockroaches would go up to 27,270!
A cockroach flies with some difficulty but is a swift runner. It can identify threat easily. Nature has given cockroach microscopic hair on its body, which are directly connected with its central nervous system. These sensory hairs identify wind direction. As a roll of a news-paper or a broom is swung down (or even up) on cockroach, air swiftly flows toward it. Cockroach senses the approaching air flow and immediately runs away in the opposite direction. A fly also employs the same tactics; hence a racket-like fly swatter is used. This plastic device has many rectangular holes through which air escapes. This venting not only minimizes the air pressure, but allows fly swatter to move quickly through air. Thus, by the time the fly’s (or a cockroach’s) natural ‘radar’ senses the attack, the target is hit!
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