Scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied

A thin layer around Earth that supports life which extends several kilometers above the Earth’s surface and extends several kilometers below the ocean’s surface

Living factors in an organism’s environment

Nonliving factors in an organism’s environment

Organisms of a single species that share the same geographic location at the same time

a group of interacting populations that occupy the same geographic area at the same time.

a biological community and all of the abiotic factors that affect it.

a large group of ecosystems that share the same climate and have similar types of communities.

an area where an organism lives.

is the role or position that an organism has in its environment.

When species get their food by eating other organisms. It is the predator.

The close relationship that exists when two or more species live together

symbiosis that is beneficial to both organisms involved.

an association between two organisms in which one benefits and the other derives neither benefit nor harm.

the practice of living as a parasite in or on another organism which many times causes harm to the host of the parasite.

Organisms that collect energy from sunlight or inorganic substances to produce food.

Organisms that get their energy requirements by consuming other organisms.

an organism that eats only plants to gain energy.

an organism that eats only animals to gain energy

an organism that eats both plants and animals to gain energy.

an animal which feeds on dead organic material (worms, beetles, millipedes)

steps in a food chain or food web.

a simple model that shows how energy flows through an ecosystem.

a model representing the many interconnected food chains and pathways in which energy flows through a group of organisms.

the total mass of organisms in a given area or volume.

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Bio Ch 2 Sec 1&2 Voc

Biology Ch2 Sec 1 & 2 Vocab

Term	Definition
ecology	Scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied
biosphere	A thin layer around Earth that supports life which extends several kilometers above the Earth’s surface and extends several kilometers below the ocean’s surface
biotic factor	Living factors in an organism’s environment
abiotic factor	Nonliving factors in an organism’s environment
population	Organisms of a single species that share the same geographic location at the same time
biological community	a group of interacting populations that occupy the same geographic area at the same time.
ecosystem	a biological community and all of the abiotic factors that affect it.
biome	a large group of ecosystems that share the same climate and have similar types of communities.
habitat	an area where an organism lives.
niche	is the role or position that an organism has in its environment.
predation	When species get their food by eating other organisms. It is the predator.
symbiosis	The close relationship that exists when two or more species live together
mutualism	symbiosis that is beneficial to both organisms involved.
commensalism	an association between two organisms in which one benefits and the other derives neither benefit nor harm.
parasitism	the practice of living as a parasite in or on another organism which many times causes harm to the host of the parasite.
autotroph	Organisms that collect energy from sunlight or inorganic substances to produce food.
heterotroph	Organisms that get their energy requirements by consuming other organisms.
herbivore	an organism that eats only plants to gain energy.
carnivore	an organism that eats only animals to gain energy
omnivore	an organism that eats both plants and animals to gain energy.
detritivore	an animal which feeds on dead organic material (worms, beetles, millipedes)
trophic level	steps in a food chain or food web.
food chain	a simple model that shows how energy flows through an ecosystem.
food web	a model representing the many interconnected food chains and pathways in which energy flows through a group of organisms.
biomass	the total mass of organisms in a given area or volume.

Created by: Mr. Bryant

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