Match each kingdom with the interesting fact about that kingdom. Some organisms within this group are photosynthetic, but many are pathogenic to humans, causing illnesses like Giardia. Some organisms of this kingdom are carnivorous and build underground adhesive webs to trap nematodes or amoebas. Some organisms in this kingdom are the top consumers in theirfood webs. Organisms in this kingdom produce about half of the Earth's oxygen via photosynthesis.