lecture 18

Question 1

List the 3 main sources of food, as well as the percentage

Answer 1

croplands- 77%
rangelands- 16%
Ocean Fisheries- 7%

Question 2

How much of the worlds food is produced through industrial agriculture & Traditional agriculture

Answer 2

Industrial- 80%

Traditional -20%

Question 3

What are the 3 most important crops

Answer 3

Corn, rice, wheat

Question 4

Define interplanting

Answer 4

The process of growing more than one crop at a time

Question 5

Define Land degradation

Answer 5

The loss of ability to support crops, livestock, or wild species

Question 6

Define Soil erosion

Answer 6

A type of land degradation in which soil components are transported to another area

Question 7

Define desertification

Answer 7

The process by which semi-arid or arid regions of the world lose productivity (if 10% or greater loss the land is going through desertification)

Question 8

Define Salinization

Answer 8

Occurs when irrigation water (containing salts) evaporates and leaves a film of salty precipitate

Question 9

Define Water logging

Answer 9

A treatment of salinization, farmers attempt to force salt deeper in ground by applying large amounts of water