The amount of a crop produced per hectare (or acre)
What is yield
100
Give an example of traditional farming versus modern farming
What is plow pulled by livestock vs. tractors, manure vs. chemical fertilizers, ditches for irrigation vs. sprinkler systems
100
Cattle, sheep, goats, pigs, and chicken are all types of
What is livestock
100
Which of the following agriculture products requires the least amount of energy?
a. beef cattle
b. wheat
c. dairy cows
d. both (a) and (c)
What is (b) wheat
200
loss of fertile soil when it is blown away by wind or washed away by water
What is erosion
200
widespread food shortage that results in many people not having enough food
What is famine
200
_____________ land is land on which it is possible to grow crops
What is arable
200
What species of livestock increased its population more than 300% between 1961 and 2004
What are chickens
200
technology in which genetic material in a living cell is modified for medical or industrial use
What is genetic engineering
300
upper layer of soil consisting of rock particles, water, air, and organic matter
What is topsoil
300
Between 1950 and 1970, Mexico increased its production of wheat eight-fold and India doubled its production of rice, without increasing the area of farmland used
What is the Green Revolution
300
Name 2 of the three farming techniques we talked about that helped slow erosion
What is contour farming, terrace farming, no-till farming
300
Cud chewing mammals that have three- or four-chambered stomachs
What are ruminants
300
DDT is harmful to the environment because
a. it does not break down quickly into harmless chemicals
b. it concentrates in the bodies of animals high in the food chain
c. it causes some birds to lay eggs with shells so thin that they break when the birds sit on them
d. all of the above
What is (d) all of the above
400
health problems created by not eating enough necessary nutrients
What is malnutrition
400
this is the process by which farmers who grow only enough food for local use
What is subsistence farming
400
the use of living organisms to control pests
What is biological pest control
400
These types of animals are bred and managed for human use
What are domesticated
400
No fishing zones are created as an effort to reduce the effects of ______________________
What is overharvesting
500
decreases the amount of arable land available
What is desertification
500
the type and amount of food that a person eats
What is diet
500
changes in the genetic makeup of pest populations that result in the ability to tolerate particular pesticides
What is resistance
500
What are the two types of aquaculture that we discussed in section 3
What is fish farm and ranch
500
A modern method of controlling pests on crops. Some of the steps include setting action thresholds, identifying and monitoring pests, preventing pests, and controlling pests when necessary