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Section 8 -- Ecology
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Terms in this set (14)
Ecosystem
A group of living organisms, and their environment which interact with each other (Habitat + Community)
Habitat
Place where an organism lives
Community
All organisms of different species in a habitat
Population
All organisms of the same species in a habitat
Quadrat
Square frame enclosing a known area
How quadrats are used to estimate population size in different areas
-They are placed on the ground and all organisms within are counted
-Then multiply this number by total area
How quadrats are used to sample distribution of organisms in a habitat
-Mark out a line (transect)
-Collect data along line using quadrats placed next to each other
Stages in the water cycle
Evaporation
Condensation
Transpiration
Precipitation
Evaporation
A process where liquid water turns into water vapor (rises into sky)
Condensation
Change in state of matter from gas to liquid when cooling occurs (formation of clouds)
Transpiration
The loss of water vapor from plants (gets evaporated)
Precipitation
Water that falls from clouds in liquid/solid state (rain/hail/snow)
Stages in the carbon cycle
Photosynthesis (takes in CO2, gives out O2)
Respiration (takes in O2, gives out CO2)
Decomposition (When living things die, they decompose and the carbon in their bodies get absorbed back to the mantle of the earth)
Combustion (Factories release CO2)
4 stages of the nitrogen cycle
- Nitrogen fixation
- Decay
- Nitrification
- Denitrification
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