Ecosystems Crossword

The nonliving parts of an ecosystem
A predator that is at the top of a food chain and that is not preyed upon by any other animal
A living part of an ecosystem
A relationship between two species in which one species benefits and the other is neither helped or harmed
An interaction that occurs when organisms try to get the same resources
All the populations of organisms in an ecosystem
An organism that obtains energy by feeding on other organisms
A helpful interaction among organisms living in a limited area that aids each organism's survival
An organsim that gets energy by breaking down dead organisms and the wastes of living things
The process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
All the living and nonliving parts of an environment as well as the ineractions among them
An organism that a parasite lives in or on
An environmental factor that prevents a population from increasing
A symbiotic relationship between two organisms in which both organisms benefit
An organism's role in its environment
The process that converts nitrogen in the atmosphere into compounds in the soil that are useful to a varity of organisms
An organism that lives in or on another organism and benefits at the other organism's expense
A symbiotic relationship in which one organism benefits and the other is harmed
A process by which plants use the sun's energy to make food
A group of organisms of the same species living in the same place
A relationship in which one animal hunts, kills and eats another animal
An organism that eats producers
An organism in a food web or food chain that makes its own food
A close relationship between two species that benefits at least one of the species (3 types-mutualism, commensalism, parasitism)
A feeding level in an ecosystem