Organisms & Their Relationships
Flow of Energy in an Ecosystem
The Carbon Cycle
Community, Biome, & Ecosystem
Population Dynamics
100
A biological community and all of the abiotic factors that affect it
What is an ecosystem?
100
Organisms that collect energy from sunlight or inorganic substances to produce food.
Autotrophs
100
Factories and cars releasing Carbon Dioxide into the atmosphere
Industrial Emission
100
An upper limit and lower limit that define the conditions in which an organism can survive
Range of Tolerance
100
The number of individuals per unit area or volume.
Population Density
200
The role or position that an organism has in its environment
What is a Niche?
200
Organisms that get their energy requirements by consuming other organisms
Heterotrophs
200
The process of plants taking carbon dioxide out of the atmosphere to make sugar.
Photosynthesis
200
The change in an ecosystem that happens when one community replaces another as a result of changing abiotic and biotic factors
Succession
200
The overall pattern of a population – related to resource availability
Spacial Distribution
300
Nonliving factors in an organism’s environment
What are abiotic factors?
300
Organisms that eat fragments of dead matter in an ecosystem
Detritivores
300
The process of an animal utilizing oxygen and expelling carbon dioxide
Respiration
300
The orderly and predictable change that takes place after a community of organisms has been removed but the soil has remained intact
Secondary Succession
300
Factors unrelated to population density, often abiotic
Density-Independent Factors
400
Occurs when more than one organism uses a resource at the same time
Competition
400
Each step in a food chain or food web
Trophic Level
400
The process of a substance being dispersed from high to low concentrations
Diffusion
400
Any abiotic factor or biotic factor that restricts the numbers, reproduction, or distribution of organisms DAILY DOUBLE
Limiting Factor
400
Effect populations more as populations increase, often biotic
Density-Dependent Factors
500
The close relationship that exists when two or more species live together
Symbiotic Relationships
500
A model representing the many interconnected food chains and pathways in which energy flows through a group of organisms
Food Web
500
A process that manifests fossil fuels over millions of years.
Deposition of Dead Material
500
One zone or standard deviation removed from an organism's optimal environment
Zone of Physiological Stress
500
Adaptation for living in an environment where the abiotic and biotic factors fluctuate
R- Strategy Reproduction
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