Organisms that produce their own food using energy from the sun.

Organisms that rely on other organisms for food.

A heterotroph that eats only plants.

A heterotroph that eats only meat.

A heterotroph that eats both plants and animals.

Organisms like bacteria and fungi that break down and absorb nutrients from dead or decaying matter.

A feeding step in a food chain or web.

Only about 10% of energy is passed to the next trophic level; the other 90% is lost as heat.

The particular role of a species within an ecosystem

The variety of organisms in an area. Higher biodiversity increases an ecosystem's stability and ability to adjust to change

A group of individuals of the same species living in the same area.

All of the different populations living together in an area.

The interactions between biotic (living) and abiotic (non-living) factors.

A large area characterized by its climate and the specific organisms that live there.

The maximum number of individuals an ecosystem can support based on limited resources

A relationship where two different organisms live in close association

A symbiotic relationship where both species benefit (e.g., E. coli in human intestines).

A relationship where one species benefits and the other is unaffected (e.g., Spanish moss on trees)

A relationship where one organism (parasite) benefits by harming another (host)

An interaction where one organism (predator) eats another (prey).

The process by which plants take in CO₂ and sunlight to make food and release oxygen.

The process by which plants and animals break down food for energy, releasing CO₂ back into the air

The process where specialized bacteria convert nitrogen gas into ammonia that plants can use

The process where bacteria break down nitrates in the soil and release nitrogen gas back into the atmosphere

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Biology

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Term	Definition
Autotrophs	Organisms that produce their own food using energy from the sun.
Heterotrophs	Organisms that rely on other organisms for food.
Herbivore	A heterotroph that eats only plants.
Carnivore	A heterotroph that eats only meat.
Omnivore	A heterotroph that eats both plants and animals.
Decomposers	Organisms like bacteria and fungi that break down and absorb nutrients from dead or decaying matter.
Trophic Level	A feeding step in a food chain or web.
10% Rule	Only about 10% of energy is passed to the next trophic level; the other 90% is lost as heat.
Niche	The particular role of a species within an ecosystem
Biodiversity	The variety of organisms in an area. Higher biodiversity increases an ecosystem's stability and ability to adjust to change
Population	A group of individuals of the same species living in the same area.
Community	All of the different populations living together in an area.
Ecosystem	The interactions between biotic (living) and abiotic (non-living) factors.
Biome	A large area characterized by its climate and the specific organisms that live there.
Carrying Capacity	The maximum number of individuals an ecosystem can support based on limited resources
Symbiosis	A relationship where two different organisms live in close association
Mutualism	A symbiotic relationship where both species benefit (e.g., E. coli in human intestines).
Commensalism	A relationship where one species benefits and the other is unaffected (e.g., Spanish moss on trees)
Parasitism	A relationship where one organism (parasite) benefits by harming another (host)
Predation	An interaction where one organism (predator) eats another (prey).
Photosynthesis	The process by which plants take in CO₂ and sunlight to make food and release oxygen.
Cellular Respiration	The process by which plants and animals break down food for energy, releasing CO₂ back into the air
Nitrogen Fixation	The process where specialized bacteria convert nitrogen gas into ammonia that plants can use
Denitrification	The process where bacteria break down nitrates in the soil and release nitrogen gas back into the atmosphere

Created by: 258417

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