parasites include single celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery

celled circle close design dodder drawing dysentery eusocial extended eye font food fungi fungus harm head hookworms host hosts include inside interaction interactions interspecific iron kill lice life line live lives malaria members mistletoe mosquitoes one organ organism parasite parasites parasitism pattern period persistent pink plants protozoans relationship ringworm sickness single singlecelled sketch sleeping smaller social species structurally symbiosis termites time vampire