unit 5 vocab | 1 +2+3 Flashcards
agriculture
the process by which humans alter the landscape in order to raise crops and livestock for consumption and trade
subsistence farming
when farmers consume the crops that they grow and raise, usually using simple tools and manual labor; raising food they need to live
animal domestication
raising and caring for animals by humans for protection or food
plant domestication
the growing of crops that people planted, raised, and harvested, probably began after animal domestication
Columbian Exchange
the global movement of plants and animals between Afro-Eurasia and the Americas
terrace farming
when farmers build a series of steps into the side of a hill
irrigation
the process of diverting water form its natural course or location to aid in the production of crops
carrying capacity
the number of crops or people that an area can support
deforestation
the removal of large tracts of forest, has occurred throughout human history
desertification
the transition of land from fertile to desert
slash-and-burn agriculture
all vegetation in an area of forest is cut down and burned in place, is likely one of the earliest agricultural practices
commercial agriculture
when farmers focus on raising one specific crop to sell for profit
Enclosure Acts
a series of laws enacted by the British government that enabled landowners to purchase and enclose land for their own use that had previously been common land used by peasant farmers
Green Revolution
the development of higher-yielding, disease-resistant, faster-growing varieties of grains
hybrids
the process of breeding together two plants that have desirable characteristics
GMOs
a process by which humans use engineering techniques to change the DNA of a seed
Machinery
agricultural technologies assisted in production and challenges traditional labor-intensive farming practices
first agricultural recolution
the origin of farming
second agricultural revolution
1700s, used the advances of the industrial revolution to increase food supplies and support population growth
third agricultural revolution
1960s; includes the green rev.
pastoral nomadism
is when people travel from place to place with their herds of domesticated animals (subsistence + in LDC); practiced in arid/semi-arid climates
ranching
when livestock graze over large areas while the owners remain in the same place (commercial agri. + in MDC)
shifting cultuvations
when farmers move from one field to another (aka slash-and-burn, swidden agri)
crop rotation
when farmers change which crops are grown within a field
plantation agriculture
the use of plantations; a large farm that specializes in one crop (commercial + found in low lats, hot+humind climates w/ substantial precipitation
mixed crop/livestock farming
an integrated system where the majority of the are grown to be fed directly to livestock; MDC
grain farming
when farmers (in regions too dry) raise wheat/grains
commercial gardening
where products were traditionally driven to urban market to be sold; market gardening or truck farming
dairy farming
the creation of dairy products; exists in some LDC and more MDC