January 2023

Problems with inland fishing

By |2022-09-15T12:34:46+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Inland fishing faces a number of problems. Image credit safari365.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Problems with inland fishing

  • The potential of the SADC region’s fisheries is far from being realized because of several problems bedeviling the fishing industry.
  • These include the following:

Sedimentation of rivers, lakes and dams.

  • Most […]
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The siting and production of hydro-electric power: Rivers and Space

By |2022-09-15T12:34:39+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

The Zambezi River and the Victoria Falls. Image credit thesafarisource.com/

ZIMSEC O Level Geography Notes: Natural Resources: Energy:The siting and production of hydro-electric power

Large perennial rivers

  • These are also important and necessary for establishing HEP stations.
  • These ensure a constant supply of a large volume of water required.
  • When the rivers […]
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Advantages and Disadvantages of Oil/Petroleum as a source of energy

By |2022-09-15T12:34:23+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of Natural gas as a source of energy

Advantages

  • Has high energy output, an efficient energy source.
  • Relatively cleaner compared with coal.
  • Easy to mine if land-based oilfields.
  • Easy to transport through pipelines.
  • Can be used to power vehicles
  • Relatively cheap.
  • Has a lot of other industrial uses.

Disadvantages

  • Environmentally […]
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