February 2025

Factors influencing world trade

By |2025-02-12T09:07:09+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Trucks at the border between Zimbabwe and South Africa. Image credit BBC

ZIMSEC O Level Geography Notes: Trade:Factors influencing world trade

  • There are several factors that influence trade.
  • Some of these factors are:
  • National income

If a country’s income level (national income) increases by a higher percentage than those of other countries, […]

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Copper products, benefits and problems

By |2025-02-12T09:39:34+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Copper products in a hardware store

ZIMSEC O Level Geography Notes: Natural Resources: Copper mining in Zambia:Copper products

The following is a list of properties of copper:

  • Copper is ductile. Meaning it can be made into wire.
  • It can be polished, thus it is used for making ornaments for example, copper plates, […]
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Sustainable Management of forest resources in rural areas

By |2025-02-12T09:24:30+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Some of the staff from various ministries and organisations in Zimbabwe involved in the sustainable use of resources

ZIMSEC O Level Geography Notes:Natural Resources: Sustainable Management of forest resources in rural areas

  • Sustainable economic development involves the careful management of resources, conservation and the monitoring of the effects of resource exploitation […]
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Natural Resources: Sustainable water consumption

By |2025-02-12T09:13:43+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Water should be used in a sustainable manner.

ZIMSEC O Level Geography Notes: Natural Resources: Water: Sustainable water consumption

  • Sustainable water use means that water must be consumed at the same rate or slower than it is being replenished by the hydrological cycle.
  • To ensure equal access to water, increase protection […]
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Aquaculture and its advantages and disadvantages

By |2025-02-12T09:09:21+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Fishing in an aquaculture pond. Image credit irinnews.org

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Advantages and disadvantages of aquaculture

  • the rearing of aquatic animals or the cultivation of aquatic plants for food
  • It is practiced in ponds, rivers, dams, lakes or even oceans
  • It is also known as aquafarming
  • The […]
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The siting and production of hydro-electric power: Rivers and Space

By |2025-02-12T09:28:25+02:00February 12th, 2025|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 |2025-02-12T08:59:26+02:00February 12th, 2025|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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Pressure systems

By |2025-02-12T09:10:04+02:00February 12th, 2025|O Level Geography, Weather and Climate|

The world's pressure belts The world’s pressure belts and winds ZIMSEC O Level Geography Notes: Pressure

Pressure

  • Air has weight and therefore exerts pressure, called atmospheric pressure onto the earth’s surface.
  • The pressure is not the same for all regions nor is it the same for any one region all the time that […]
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