(a) Bush clearing. Bushes are the main habitat for tsetse flies. By clearing the vegetation, both adult flies and pupae are killed because there is less humidity.
(b) Insecticide application. Spraying is done either from low flying aircraft or from the ground.
(c) Sterilization. This is done by crossbreeding closely related species which results in sterile males or introducing an exotic species into the habitat of an original species.
(d) Traps. This method has gradually become effective due to the development of baits. This method has gained popularity due to environmental awareness on the pollution caused by the use of insecticides
Faimus answered the question on March 19, 2018 at 11:09
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The amount of water required for irrigation to a given piece of land depends on various factors. Describe any three of those factors.
(Solved)
The amount of water required for irrigation to a given piece of land depends on various factors. Describe any three of those factors.
Date posted:
March 19, 2018
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Answers (1)
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What is irrigation?
(Solved)
What is irrigation?
Date posted:
March 19, 2018
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Answers (1)
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List any seven ways in which soil can be managed and conserved
(Solved)
List any seven ways in which soil can be managed and conserved
Date posted:
March 19, 2018
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Answers (1)
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Discuss any three methods that are used in soil management and conservation efforts.
(Solved)
Discuss any three methods that are used in soil management and conservation efforts.
Date posted:
March 19, 2018
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Answers (1)
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Give any three uses of soil
(Solved)
Give any three uses of soil
Date posted:
March 19, 2018
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Answers (1)
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Give any five ways in which soil is significant
(Solved)
Give any five ways in which soil is significant
Date posted:
March 19, 2018
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Answers (1)
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Name the four types of soils classified under the Intrazonal order.
(Solved)
Name the four types of soils classified under the Intrazonal order.
Date posted:
March 17, 2018
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Answers (1)
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Name any four types of soils classified under the zonal order.
(Solved)
Name any four types of soils classified under the zonal order.
Date posted:
March 17, 2018
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Answers (1)
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Name the three types of soil classification and discuss them.
(Solved)
Name the three types of soil classification and discuss them.
Date posted:
March 17, 2018
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Answers (1)
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Soil erosion is a serious environmental hazard but also has various benefits. Highlight any two positive impacts of soil erosion.
(Solved)
Soil erosion is a serious environmental hazard but also has various benefits. Highlight any two positive impacts of soil erosion.
Date posted:
March 17, 2018
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Answers (1)
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Soil erosion is a serious environmental hazard and results on various problems. Discuss any five negative impacts of soil erosion.
(Solved)
Soil erosion is a serious environmental hazard and results on various problems. Discuss any five negative impacts of soil erosion.
Date posted:
March 17, 2018
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Answers (1)
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Various human activities favour soil degeneration through soil erosion. Discuss any three human activities that favour soil erosion.
(Solved)
Various human activities favour soil degeneration through soil erosion. Discuss any three human activities that favour soil erosion.
Date posted:
March 17, 2018
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Answers (1)
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(i) The following factors cause soil degeneration. Leaching, Continuous cropping, Change of pH (ii) Describe how these factors influence soil degeneration.
(Solved)
(i) The following factors cause soil degeneration.
Leaching
Continuous cropping
Change of pH
(ii) Describe how these factors influence soil degeneration.
Date posted:
March 17, 2018
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Answers (1)
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(a) What is soil catena
(b) What is soil degeneration
(c) Describe any three causes of soil degeneration
(Solved)
(a) What is soil catena
(b) What is soil degeneration
(c) Describe any three causes of soil degeneration
Date posted:
March 17, 2018
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Answers (1)
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(a) What is soil profile
(b) Name and describe the four soil layers
(Solved)
(a) What is soil profile
(b) Name and describe the four soil layers
Date posted:
March 16, 2018
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Answers (1)
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(a) Describe the following terms associated with soils Soil texture, Soil porosity, Soil permeability (b) What is the importance of soil acidity
(Solved)
(a) Describe the following terms associated with soils
Soil texture
Soil porosity
Soil permeability
(b) What is the importance of soil acidity
Date posted:
March 16, 2018
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Answers (1)
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The main factors influencing soil formation are the nature of the parent rock and climate. Briefly describe how these factors influence soil formation.
(Solved)
The main factors influencing soil formation are the nature of the parent rock and climate. Briefly describe how these factors influence soil formation.
Date posted:
March 16, 2018
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Answers (1)
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The following factors influence soil formation. Briefly explain how they influence the formation of soil. Living organisms, Relief, Time
(Solved)
The following factors influence soil formation. Briefly explain how they influence the formation of soil.
Living organisms
Relief
Time
Date posted:
March 16, 2018
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Answers (1)
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(a) Describe the following leaching processes leading to the formation of various soil types. Ferralisation, Eluviation, Illuviation, Podzolisation, Calcification, Ribification, Salinisation (b) Differentiate between eluviation and illuviation.
(Solved)
(a) Describe the following leaching processes leading to the formation of various soil types.
Ferralisation
Eluviation
Illuviation
Podzolisation
Calcification
Ribification
Salinisation
(b) Differentiate between eluviation and illuviation.
Date posted:
March 16, 2018
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Answers (1)
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Formation of soil through decomposition of organic matter takes place in two stages. Describe them.
(Solved)
Formation of soil through decomposition of organic matter takes place in two stages. Describe them.
Date posted:
March 16, 2018
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Answers (1)