In the real world, as a practical matter, motives are frequently mixed and often quite impossible to determine. Unambiguous definition is nonetheless a prerequisite to practical determinations about what is and
they are used as solvents andpesticidesand as intermediates in the preparation ofdyes,drugs, andsyntheticpolymers. More than 2,000 organohalogen compounds have been identified as naturally occurring materials and are produced by variousplants,fungi,bacteria, and marine organisms. A variety of synthetic...