NR 501: EXAM QUESTIONS WITH CORRECT
ANSWERS 2025/2026
How much arable soil is there on Earth - CORRECT ANSWER -11%
What are the basic soil processes - CORRECT ANSWER -- Additions
- Losses
- Translocations (movement within the soil)
- Transformations (one component changes into another)
Additions - CORRECT ANSWER -- Fertilizers
- Rain
- Animal Waste
- Leaf litter
- Dead Roots
Losses - CORRECT ANSWER -- Evaporation
- Nutrients taken up by plants
- Soil particles wash away by storm
Translocations - CORRECT ANSWER -- Gravity pulls soil from top to bottom
- Evaporating water draws minerals from bottom to top
- Organisms carry material
Transformations - CORRECT ANSWER -- Dead leaves decompose into humus
- Hard rock weathers into soft clay
ANSWERS 2025/2026
How much arable soil is there on Earth - CORRECT ANSWER -11%
What are the basic soil processes - CORRECT ANSWER -- Additions
- Losses
- Translocations (movement within the soil)
- Transformations (one component changes into another)
Additions - CORRECT ANSWER -- Fertilizers
- Rain
- Animal Waste
- Leaf litter
- Dead Roots
Losses - CORRECT ANSWER -- Evaporation
- Nutrients taken up by plants
- Soil particles wash away by storm
Translocations - CORRECT ANSWER -- Gravity pulls soil from top to bottom
- Evaporating water draws minerals from bottom to top
- Organisms carry material
Transformations - CORRECT ANSWER -- Dead leaves decompose into humus
- Hard rock weathers into soft clay