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24 Cards in this Set

  • Front
  • Back
acid rain
Rain containing nitric and sulfuric acids.
The science and art of farming.
Farming of aquatic organisms.
Biological diversity; the sum total of the variety of organisms in the biosphere.
biological magnification
A trophic process in which retained substances become more concentrated with each link in the food chain.
Wise management of natural resources, including the preservation of habitats and wildlife.
Destruction of forests.
In areas with dry climates, a process caused by a combination of poor farming practices, overgrazing, and drought that turns productive land into desert.
ecosystem diversity
Variety of habitats, living communitites, and ecological processes in the living world.
endangered species
A species that is in danger of extinction throughout all or a significant portion of its range.
Disappearance of a pspecies from all parts of its geographical range.
genetic diversity
Sum total of all the different forms of genetic information carried by all organisms living on Earth today.
green revolution
Introduction of intensive farming practices that lead to a substantial increase in crop yields.
habitat fragmentation
Splitting of ecosystems into small fragments.
invasive species
Plants and animals that have migrated to places where they are not native.
Cultivation of large land areas with a single plant variety.
nonrenewable resource
Resource that cannot be replenished by natural processes.
Harmful material that can enter the biosphere through the land, air or water.
renewable resource
Resource that can regenerate quickly and that is replaceable.
Gray-brown mixture of chemicals that occurs as a haze in the atmosphere.
soil erosion
Wearing away of surface soil by water and wind.
species diversity
Number of different species in the biosphere.
subsistence hunting
Hunting only to acquire basic necessities for survival.
sustainable use
Using natural resources at a rate that does not deplete them.