The Health of the Environment Crossword Puzzle

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