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environmental management IGCSE summary of soil unit
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Environmental management IGCSE summary of soil unit, based entirely from the book and very complete(can be used as the only resource for studying)
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IGCSE environmental management (soil unit)
Flashcards
21 Flashcards
$10.49
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Flashcards
21 Flashcards
$10.49
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Some examples from this set of practice questions
1.
name the 4 components of soil
Answer: mineral particles, organic content, air, water
2.
what is desertification
Answer: the process of fertile land being transformed into desert
3.
name 3 organisms involved in the breakdown of organic matter
Answer: fungi, bacteria, earthworms
4.
what are the benefits of high levels of organic matter in plants
Answer: increased water-holding capacity, increase air spaces in soil, increased number of decomposer organisms, prevent loss of mineral nutrients
5.
negatives of clay soils
Answer: small air spaces, water doesnt drain easily, hard to cultivate
6.
difference between extensive and intensive agriculture
Answer: extensive:small production from large area/intensive:big production from small area
7.
what is crop rotation
Answer: growing different types of plants in different plots each year
8.
advantages and disadvantages of organic fertilisers
Answer: ad: natural resources used, improves soil dis: unpleasant, hard to transport, may be variable in composition
9.
name water application methods
Answer: overhead srpinkler system, clay pot system, trickle drip system, flood irrigation
10.
what are pests
Answer: animals that attack or feed upon the crop
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