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16 Cards in this Set

  • Front
  • Back
Define a population and give 4 factors that affect a population's size
Emigration, Immigration, natality, mortality
Define emmigration
The number of individual moving out of a population
Define immigration
The number of individual moving into a population
Define natality
The number of offspring born into a population in a year.
Define mortality
The number of individuals that die in a population in year.
Define population
All of the members of a species living in the same ecosystem or habitat.
Define photosynthesis
The process by which green plants and some other organisms use sunlight energy, CO2 and water to produce carbohydrates and O2.
Define respiration
The process by which animals use food energy, O2 and water to produce carbohydrates and CO2.
Define bio-amplification
Process which causes higher toxic levels to be found in the bodies of consumers at each increasing trophic level
Define soil
The top layer of the earth's surface, consisting of rock and mineral particles mixed with organic matter.
Define fertilizer
Materials used to restore nutrients and increase plant growth and production.
Define pesticides
Chemicals designed to kill pests.
Define eutrophication
Natural eutrophication is the process by which lakes gradually age and become more productive.
Define water pollution
Changes whether physical or chemical that is introduced to surface water or ground water
Dissolved oxygen
Essential for life processes of most aquatic organisms
Nitrogen and Phosphorus
The nutrients nitrogen and phosphorus are essential for plant growth. High concentrations indicate potential for excessive weed and algal growth.