Food Chain/Web & Vocab terms
Each feeding level in an ecosystem is called a:
Trophic level
the struggle between organisms to survive in a habitat with limited resources
competition
a relationship between two organisms in which one organism benefits and the other is unaffected
commensalism
Fossil Fuels release a lot of ______ into the atmosphere
carbon dioxide
The simplest level of organization in the living world is the _______, which is any living thing.
organism
Only about _____ of the energy is passed on to each trophic level
10%
to live together without any problems; to be together in the same time or space
coexist
a relationship between two organisms of different species where one benefits and the other is harmed
parasitism
All living things use _______ to make proteins and other materials in the cells, but most organisms can’t use it in gas form.
nitrogen
Every organism is a member of a _____
species
the process of burning something
combustion
a helpful interaction among organisms living in a limited area that aids each organism's survival
cooperation
The organic circulation of carbon from the atmosphere into organisms and back again
the carbon cycle
Nitrogen is found in many places on Earth. Most of Earth’s nitrogen is found in the atmosphere in the form of ________ gas.
nitrogen
The next level of organization is the _________.
population
water held underground in the soil or in pores and crevices in rock.
ground water
a relationship between two different species of organism living together
symbiosis
process of converting nitrogen gas into nitrogen compounds that plants can absorb and use
nitrogen fixation
______ moves from the atmosphere to plants, where they use it for photosynthesis.
carbon
A ________ is ALL the species that live in the same place at the same time.
population
An organism's particular role in an ecosystem, or how an organism acts within its ecosystem.
niche
symbiotic relationship in which both species benefit from the relationship
mutualism
process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
denitrification
Through food chains, the _____ that is in plants moves to animals that eat them.
carbon
A _______ is made up of all the populations that live in an area at the same time.