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33 Cards in this Set
- Front
- Back
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The number of species in a particular geographic area
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species diversity
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The disappearance of a species or population from a particular area
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extirpation
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An event which involves the disappearance of more than half the species on earth is called a
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mass extinction
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the disappearance of species before humans arrived on earth is
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background rate
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a record of endangered species from around the world is
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red list
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the ability of an ecosystem to continue and adapt to change is
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resilience
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natural processes in ecosystems which benefit human beings are called
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ecosystem services
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the base geological material in a particular area
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parent material
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processes which break down parent material intosmaller particles
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weathering
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the saturation of soil with water
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waterlogging
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the build up of salts in the surface soil layers
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desalination
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the loss of more than 10% soil productivity
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desertification
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farming and ranching that does not deplete soil faster than it forms, maintains clean water, and genetic diversity
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sustainable agriculture
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farming that relies on biological approaches and uses no synthetic pesticides fertilizer, growth hormones or genetically modified seeds
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oranganic agriculture
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five major causes of decreased biodiversity
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climate change
habitat alteration overharvesting pollution invasive species |
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layers of porous material through which groundwater moves
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aquifer
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marshes, swamps and bogs
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wetlands
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land with especially fertile soil due to periodic deposition of salt
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floodplain
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water lost through the pores in leaves of green plants
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transpiration
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precipitation which soaks into the ground
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groundwater
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The upper surface of all the water which accumulates in the soil and rock of a particular region.
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water table
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water molecules rejoining to form liquid clouds and fog
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precipitation
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all the ponds lakes rivers and streams on earth
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surface waters
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any organic or inorganic substance containing essential nutrients
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fertilizers
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the use of biological science to change organisms to create products for human use
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biotechnology
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biotechnology that involves changing an organisms DNA
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genetic engineering
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the sum total of all organisms in a particular area
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biodiversity
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a plant supporting system consisting of disintegrated rock, organic matter, water, gases, nutrients, and microorganisms
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soil
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cross section of soil
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soil profile
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portion of soil that contains the most of the nutrients for plant growth
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topsoil
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the uniform planting of a single crop
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monoculture
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the practice of raising crops and livestock for human use and consumption
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agriculture
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the use of natural predators and competitors to diminish pests
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biocontrol
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