The Health of the Environment Crossword Puzzle

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QUESTIONS LIST: biotic : the living factors of an ecosystem, biologicalcontrol : the use of a species to get rid of pests instead of using pesticides, coralreef : an aquatic ecosystem with high biodiversity, diseases : they control the size of a populations by making them sick, predators : they control the number of preys by hunting them, biosphere : earth planet; the biggest ecosystem, ecosystem : an environment with living and non-living things, toxins : another word for "poisons", bioaccumulation : the build-up of chemicals or toxins in an organism during its lifetime, population : the size or the number of organisms of a certain species, invasive : species that cause problems in other ecosystems, but not in their homeland, biodiversity : a measure of the biological variety of species in an ecosystem, niche : the role or the job of an organism, pesticides : chemicals that kill pests to protect our crops, desert : a land ecosystem with very little water; so hot during the days and cold during the nights, interdependence : organisms need each other to stay alive, habitat : the home of an organism, abiotic : the non-living factors of an ecosystem