Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
agricultural revolution
|
n agricultural revolution or agrarianrevolution is a period of transition from the pre-agricultural period characterized by a Paleolithic diet, into an agricultural period characterized by a diet of cultivated foods
|
|
aquaculture
|
the farming of aquatic organisms such as fish, crustaceans, molluscs and aquatic plants.
|
|
biological control
|
the control of a pest by the introduction of a natural enemy or predator.
|
|
blast fishing
|
Blast fishing or dynamite fishing is the practice of using explosives to stun or kill schools of fish for easy collection
|
|
broad spectrum pesticide
|
Broad spectrum pesticides will kill insects indiscriminately, without regard to the species.
|
|
bycatch
|
is a fish or other marine species that is caught unintentionally while catching certain target species and target sizes of fish, crabs etc
|
|
clear cutting
|
cut down and remove every tree from (an area).
|
|
contour farming
|
is thefarming practice of ploughing and/or planting across a slope following its elevation contour lines
|
|
cyanide fishing
|
Cyanide fishing is a method of collecting live fish mainly for use in aquariums, which involves spraying a sodium cyanide mixture into the desired fish's habitat in order to stun the fish
|
|
dead zone
|
devoid of oxygen, oceans
|
|
desertification
|
a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife
|
|
gangue
|
the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit.
|
|
gill net fishing
|
a commonfishing method used by commercial and artisanalfishermen of all the oceans and in some freshwater and estuary areas. “Gill nets are vertical panels of netting normally set in a straight line.
|
|
GMO
|
an organism whose genome has been altered by the techniques of genetic engineering so that its DNA contains one or more genes not normally found there.
|
|
green revolution
|
a series of research, and development, and technology transfer initiatives, occurring between the 1940s and the late 1960s, that increased agricultural production worldwide
|
|
leaching
|
Natural process by which water soluble substances (such as calcium, fertilizers,pesticides) are washed out from soil or wastes
|
|
long line fishing
|
uses a long line, called the main line, with baited hooks attached at intervals by means of branch lines called snoods
|
|
methyl mercury
|
Methylmercury is an organometallic cation with the formula [CH₃Hg]⁺. It is a bioaccumulative environmental toxicant
|
|
narrow spectrum pesticide
|
target only a specific type of insect or family of insects
|
|
ore
|
a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
|
|
pesticide tread mill
|
a term indicating a situation in which it becomes necessary for a farmer to continue using pesticides regularly because they have become an indispensable part of an agricultural cycle.
|
|
purse seine fishing
|
a large seine, for use generally by two boats, that is drawn around a school of fish and then closed at the bottom by means of a line passing through rings attached along the lower edge of the net.
|
|
smelting
|
extract (metal) from its ore by a process involving heating and melting.
|
|
soil salinization
|
the process of increasing the salt content is known as salinization. Salt is a natural element of soils and water. Salination can be caused by natural processes such as mineral weathering or the gradual withdrawal of an ocean.
|
|
strip mining
|
a way of mining coal, iron, etc. that involves digging along the surface of the earth
|
|
subsistence agriculture
|
self-sufficiency farming in which the farmers focus on growing enough food to feed themselves and their families
|
|
tailing
|
the residue of something, especially ore.
|