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10 terms

Chapter 3 The Biosphere

STUDY
PLAY
Biosphere
the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist
Community
(ecology) a group of interdependent organisms inhabiting the same region and interacting with each other
Autotroph
plant capable of synthesizing its own food from simple organic substances
Chemosynthesis
synthesis of carbohydrate from carbon dioxide and water
Detritivore
organism that feeds on plant and animal remains and other dead matter
Biomass
the total mass of living matter in a given unit area
Tanspiration
When a plant releases water into the atmosphere
Denitrification
conversion of nitrates into nitrogen gas
Biome
a major biotic community characterized by the dominant forms of plant life and the prevailing climate
Trophic Level
each step in a food chain or food web