Final Flashcards
famine
extreme food insecurity
overnourished
Ingestion of too many calories and improper foods
undernourished
Lacking sufficient calories to be healthy
Malnourished
Lacking sufficient proteins, carbohydrates, vitamins or minerals
food security
Having access to sufficient, safe, and nutritious food
Persistent pesticides
Linger in the environment for long pds. Of time
Insecticides
kill bugs
herbicide
kill weeds
broad spectrum pesticide
kills many diff. types of pests
Intercropping
2 or more crops are planted in the same field at the same time
monocropping
Planting a single species of variety
Crop rotation
Rotating the crops planted on a field from yr to yr
agroforestry
Interspersing trees w/ other crop plants
contour plowing
Plowing parallel to topographic contours
autumn crops
Planting crops that will grow in bet. Seasons so that land won’t be bare
No-till agriculture
Leaves crop residues on soil bet. Seasons
organic agriculture
The production of crops w/out the use of pesticides/ fertilizers
Aquaculture
The farming of aquatic organisms
Factory ships
stay at sea for long periods of time. process and freeze catch on board
Infill
material that fills in an unoccupied space
urban blight
the degration of the built and social environment of the city that often accompanies and accelerates migration to the suburbs
urban sprawl
Is the creation of urbanized areas that spread into rural areas and remove clear boundaries between the two
externality
A cost or benefit of a good or service that is not included in the purchase price of that good or service
maximum sustainable yield
The maximum amount of a resource that can be harvested w/out compromising the future availability of the resource
clear cutting
Cutting all or nearly all the trees in the area
selective cutting
Removes single trees or relatively small numbers of trees from among many in a forest
subsurface mining
typically horizontal shaft tunneled into the side of a mountain, then vertical tunnels are drilled
erosion
is the physical removal of soil and rocks by wind, water, and ice by down slope creep under the force of gravity
Deposition
is the accumulation or depositing of eroded material
physical weathering
is the mechanical breakdown of rocks and minerals
chemical weathering
occurs by the dissolving of minerals or direct chemical reactions with the elements found in the rocks
intrusive rock
forms within the Earth as magma rises and cools in place (slower)
extrusive rock
forms when magma is ejected and cools on Earth’s surface (quicker)
sedimentary rock
forms when sediments like muds, sands, or gravels are compressed by overlying sediments
o hold fossil records that provide a window into our past
igneous rock
formed directly from magma
metamorphic rock
formed when other rocks are subjected to high temperatures and pressures
o include marble, slate, and anthracite
passive solar
the use of the sun’s energy for the heating and cooling of living spaces
active solar
a system that uses energy from the sun to move water or air with pumps or fans
energy conservation
reduction in the amount of energy consumed in a process or system, or by an organization or society, through the economy, elimination of waste, and rational use.
Isotopes
An isotope is an atom with the same # of protons,but diff # of neutrons. Are diff. Forms or the same element.
placer mining
The obtaining of minerals from placers by washing or dredging
mountaintop removal
is a form of strip mining in which explosives are used to blast off the tops of mountains
strip mining
a type of surface mining that involves removing a thin layer of material known as overburden