The study of human population size, density, distribution, movement, and death and birth rates.
What is Demography.
100
The number of organisms per unit area.
What is Population Density.
100
The portion of earth that supports life.
What is Biosphere.
100
The act of one organism consuming another organism.
What is Predation.
100
Organisms that eat fragments of dead matter in an ecosystem, returning nutrients to the soil, air, and water where the nutrients can be reused by organisms.
What is Detritivores.
200
A change in population from high birth and high death rates to low birth and low death rates.
What is Demographic Transition.
200
The patter of spacing a population within an area, which includes uniform, clumped, and random.
What is Dispersion.
200
The name of the living factors and the non-living factors in an organism's environment.
What is Biotic and Abiotic Factors.
200
The close relationship that exists when two or more species live together. There are different types of this relationship.
What is Symbiosis.
200
Each step in a food chain or food web.
What is Trophic Level.
300
True or False: Industrialized countries use far less resources than developing countries.
What is False.
300
Keeps a population from continuing to increase indefinitely. Includes density-independent and density-dependent factors.
What is Limiting Factors.
300
A biological community and all of the living factors that affect it.
What is Ecosystem.
300
The relationship between two or more organisms that live closely together and benefit from each other.
What is Mutualism.
300
A simple model that shows how energy flows through an ecosystem.
What is Food Chain.
400
Occurs when the birthrate equals the death rate.
What is Zero Population Growth (ZPG)
400
The maximum number of individuals in a species that an environment can support for the long term.
What is Carrying Capacity.
400
A group of interacting populations that can occupy the same geographic niche at the same time.
What is Biological Community.
400
A relationship in which one organism benefits at the expense of the other.
What is Parasitism.
400
A model representing the many interconnected food chains and pathways in which energy flows through a group or organisms.
What is Food Web.
500
The number of males and females in each of three age groups: pre-reproductive stage, reproductive stage, and post-reproductive stage.
What is Age Structure.
500
The four things that affect the population growth rate.
What is Natality, Mortality, Emigration, and Immigration.
500
A large group of ecosystems that share the same climate and have similar types of communities.
What is Biome.
500
A relationship in which one organism benefits and the other organism is neither helped nor harmed.
What is Commensalism.
500
The total mass of living matter at each trophic level.