Definition of crime. 1 : an illegal act for which someone can be punished by the government; especially : a gross violation of law. 2 : a grave offense especially against morality. 3 : criminal activity efforts to fight crime.
Arthropods Facts. Arthropods are air-breathing invertebrate animals which have paired jointed legs, exoskeleton and a segmented body. Arthropods are generally classified into four classes: 1. Insects (Includes Ants, butterfly, grasshopper, cockroaches etc. Over 1 million known species). 2.
Arthropods are a very old phylum, dating back to the Cambrian period (535 million years ago) and perhaps earlier. Trace fossils made by arthropods date back to 535 million years ago, and Spriggina, an enigmatic trilobite precursor which may be an arthropod, dates to 555 million years ago.