Ecosystems (Grade 10 NSC Matric Life Sciences): Flashcards
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Ecosystem definition
Ecosystem definition
Living organisms + environment they interact with
Autotrophs
Autotrophs
Organisms that make their own food (producers)
Heterotrophs
Heterotrophs
Organisms that must eat others for food (consumers)
Special ability of decomposers
Special ability of decomposers
Digest materials outside their bodies
Neutral pH value
Neutral pH value
Humus
Humus
Decomposed organic matter in soil (gives dark colour)
Xerophytes
Xerophytes
Plants adapted to dry habitats with low rainfall
Percentage of nitrogen in air
Percentage of nitrogen in air
Energy lost at each trophic level
Energy lost at each trophic level
Biodegradable meaning
Biodegradable meaning
Can be broken down by decomposers
