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Matter
Autotroph
Food web
Biosphere
Predation
100
anything that takes up space and has mass
What is matter?
100
decomposes organic material in an ecosystem and returns nutrients into the soil, air, and water
What is detrivore?
100
an organism that traps energy from sunlight or inorganic substances to produce food
What is autotrophs?
100
The portion of the earth that supports life
What is biosphere?
100
The act of one organism consuming another organism for food
What is predation?
200
a chemical substance an organism needs to perform life functions
What is nutrients?
200
each step in a food web or food chain
What is trophic level?
200
an organism that obtains energy by consuming other organisms
What are heterotrophs?
200
all of the living factors in an environment
What is biotic?
200
A relationship in which two organisms live together in close association
What is symbiosis?
300
where bacteria in the soil change nitrogen compounds into nitrogen gas
What is dentrification?
300
a simple model that shows how energy flows through an ecosystem
What is food chain?
300
a heterotroph that only consumes plants
What is herbivore?
300
non living factors in an organisms environment
What is abiotic?
300
A relationship between two species that both benefit
What is mutualism?
400
process of capturing and changing nitrogen into a form plants can use
What is nitrogen fixation?
400
a model that shows all the possible feeding relationships in an ecosystem
What is food web?
400
heterotrophs that prey on other heterotrophs
What is carnivore?
400
an organisms job
What is niche?
400
A relationship in which one organism is helped and the other organism is not harmed or helped
What is commensalism?
500
describes the combination of processes that exchange matter through the biosphere
What is biogeochemical cycle?
500
total mass of living matter at each trophic level
What is biomass?
500
eat both plants and animals
What is omnivore?
500
an area where an organism lives
What is habitat?
500
A relationship in which one organism benefits and the other is harmed
What is parasitism?