Since the mating of certain European and African bees in Brazil during the late
1950s, an aggressive bee has been slowly heading northward. These Africanized
honeybees are known as invasive species today as they disrupt the ecosystems
they enter. More information about the killer bees spread draws readers into the
interesting scientific topic of invasive species. Fascinating fact boxes and
terrifying maps of the bees spread highlight how serious a threat invasive
species are. With discussions about ecosystem balance, food chains, and
conservation, the main content undoubtedly supplements the science curriculum.