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IB Environmental Systems and Societies. 3.4 and 3.5 Review. Click here to begin. Click here for answer. Name all five layers/horizons of a soil profile. 3.4.1: Question: 1. Click here for answer. Name at least two things that determine the primary productivity of soil. 3.4.2: Question 2.

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ib environmental systems and societies

IB Environmental Systems and Societies

3.4 and 3.5 Review

Click here to begin

3 4 1 question 1

Click here for answer

Name all five layers/horizons of a soil profile.

3.4.1: Question: 1
3 4 2 question 2

Click here for answer

  • Name at least two things that determine the primary productivity of soil.
3.4.2: Question 2
3 4 3 question 3

Click here for answer

  • Name at least three things that lead to soil degradation.
3.4.3: Question 3
3 4 4 question 4

Click here for answer

  • What are the purposes for mechanical, cropping, and soil husbandry methods?
3.4.4: Question 4
3 4 5 question 5

Click here for answer

  • Name at least two things that soil erosion and soil fertility loss, at Sierra de Santa in Veracruz, Mexico, have resulted in.
3.4.5: Question 5
3 5 1 question 6

Click here for answer

  • What is one difference between agriculture in MEDC’s and agriculture in LEDC’s?
3.5.1: Question 6
3 5 2 question 7

Click here for answer

  • Between terrestrial food production systems and aquatic food production systems, which of the two is more efficient and why?
3.5.2: Question 7
3 5 3 question 8

Click here for answer

  • What is the difference between intensive farms and extensive farms?
3.5.3: Question 8
3 5 4 question 9

Click here for answer

  • Define the term ‘shifting cultivation’.
3.5.4: Question 9
3 4 1 answer 1

Next question

  • Organic horizon
  • Mixed mineral-organic horizon
  • Eluvial or leached horizon
  • Illuvial or deposited horizon
  • Bedrock or parent material
3.4.1: Answer 1
3 4 2 answer 2

Next question

  • Mineral content
  • Drainage
  • Water-holding capacity
  • Air spaces
  • Biota
  • Potential to hold organic matter
3.4.2: Answer 2
3 4 3 answer 3

Next question

  • Water erosion
  • Wind erosion
  • Acidification (toxification)
  • Eutrophication
  • Salinity
  • Atmospheric deposition (heavy metals and organic pollutants)
  • Desertification
  • Climate change
3.4.3: Answer 3
3 4 4 answer 4

Next question

  • Soil conservation
  • Mechanical methods are used to reduce water flow
  • Cropping and soil husbandry methods are used against wind and water damage
3.4.4: Answer 4
3 4 5 answer 5

Next question

  • Reduced agricultural productivity
  • Decreased availability of drinking water in nearby urban centres
  • Increased road maintenance
  • Falling hydroelectric potential
  • A decline in the fishing industry in coastal lagoons
3.4.5: Answer 5
3 5 1 answer 6

Next question

  • MEDC’s:
    • Advanced technology
    • Low labour and high fuel costs
    • Grand-scale factory produced fertilizers and pesticides
  • LEDC’s:
    • Low levels of technology
    • Lack of capital
    • High levels of labour
3.5.1: Answer 6
3 5 2 answer 7

Next question

  • Terrestrial:
    • Second law of thermodynamics
3.5.2: Answer 7
3 5 3 answer 8

Next question

  • Intensive farming:
    • Small area of land
    • Aims to have very high output per unit area of land
  • Extensive farming:
    • Large in comparison to the money and labour put into them
    • Few workers are responsible for thousand of acres of land
3.5.3: Answer 8
3 5 4 answer 9

Next question

  • Agriculture in which new land is cleared by cutting down small areas of forests and setting them on fire.
    • Ash is used as fertilizer
    • Cleared land spaces are used to farm crops
3.5.4: Answer 9
the end

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Hope this helped 

THE END