Organisms that obtain their nutrients by breaking down wastes and dead matter.

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Organisms that obtain their nutrients by breaking
down wastes and dead matter.
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Decomposers
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Diagram which shows the flow of energy from one
organism to the next.
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Food Chain
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Describes relationships between two species that
share an environment.
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Symbiosis
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States that in undisturbed sedimentary rock
layers, the oldest rock is at the bottom and the
youngest rock is at the top.
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Law of Superposition
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Body parts that no longer appear to play a role
in the body functions of an organism.
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Vestigial Structures
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A symbiotic relationship in which one organism
benefits and the other is harmed.
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Parasitism
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Chemical substance that slows or prevents the
growth of micro-organisms such as bacteria or
fungi.
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Antibiotic
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Body parts of different organisms that have a
similar structure, but not a similar function.
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Homologous structures
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Refers to the variety in the number of different
kinds of species living on earth.
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Biodiversity
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The physical or nonliving parts of an environment.
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Abiotic factors
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A protein shell that encloses a nucleic acid.
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Capsid
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Type of feeding relationship in which one
organism uses another organism as its food
source.
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Predation
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A group of organisms that share similar
characteristics and that can interbreed to
produce fertile offspring.
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Species
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Vascular tissue that moves water nutrients from
the ground upward in the plant.
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Xylem
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The study of embryos.
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Embryology
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The living parts of an environment.
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Biotic Factors
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A symbiotic relationship in which both species
benefit from the interaction.
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Mutualism
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A consumer that feeds on both plants and animals.
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Omnivore
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Particle that consists of a nucleic acid enclosed
within a protein shell that requires a living
cell in order to reproduce.
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Virus
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Remains or evidence of organisms that lived in
the past.
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Fossil
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Specific area where a species lives andfunctions
in a biological community
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Niche
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