January 2023

Common Killer Diseases in the Tropics: Malaria

By |2022-09-15T12:36:57+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Anopheles Mosquito. Image credit voanews.com

ZIMSEC O Level Geography Notes:Common Killer Diseases in the Tropics: Malaria

  • Malaria is one of the most widespread diseases in Tropical Africa.
  • It is caused by a parasite called plasmodium,
  • which is transmitted by the female anopheles mosquito.
  • When a female anopheles mosquito bites a patient, it […]
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Human Farm Inputs: Labour and Capital

By |2022-09-15T12:36:45+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Capital and Labour are important on farms. Image credit buzzsouthafrica.com

ZIMSEC O Level Geography Notes:Agriculture:Farm Inputs:Farm Inputs: Labour and Capital

  • These fall under Human Inputs

Labour

  • This refers to the number of people involved in a production system, their skills or technical know-how as well as their production objectives.
  • In traditional farming systems, […]
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Tea farming in Zimbabwe

By |2022-09-15T12:36:28+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

ZIMSEC O Level Geography Notes:Agriculture:Farming types in Africa:Tea farming in Zimbabwe

Growing conditions and growing area

  • A perennial tree crop grown more on plantation than by individual commercial farmers.
  • A region 1 crop in Zimbabwe.
  • High rainfall, over 1 000 mm, cool temperature, around 18°C but must be frost-free.
  • Grown on mountain […]
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Multinational Companies in Zimbabwe Zimbabwe

By |2022-09-15T12:36:06+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Mining at Rio Tinto. Image credit afrespost.com

ZIMSEC O Level Geography Notes: TNCs in Zimbabwe

  • Transnational corporations (TNCs) or multi-national companies (MNCs) are companies with economic operations in more than one country.
  • Some may have operation in one country but with diverse operations

Structural operations of TNCs

  • Anglo-American Corporation (AAC) is a TNC. […]
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Ways in which developing countries can improve trade

By |2022-09-15T12:35:40+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Processed platinum fetches a higher price than raw platinum

ZIMSEC O Level Geography Notes: Trade:Ways in which developing countries can improve trade

Trade in developing countries such as Zimbabwe can be enhanced by:

  • Diversification of their economies, that is, by producing a variety of new value added manufactured goods.
  • Investing in human […]
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Rehabilitation of mine areas.

By |2022-09-15T12:35:22+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

A rehabilitated Zinc mine in Australia. Image credit abc.net.au

ZIMSEC O Level Geography Notes: Natural Resources:Mining:Rehabilitation of mine areas

  • Land rehabilitation is the process of returning the land in a given area to some degree of its former state, after some process (industry, natural disasters, etc.) has resulted in its damage.
  • […]

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Sustainable use of tropical rainforests

By |2022-09-15T12:35:06+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Tree cutting in the rainforest. Image credit carbonbrief.org

ZIMSEC O Level Geography Notes: Natural Resources: Sustainable use of tropical rainforests

  • The future survival of humankind depends on sustainable economic growth and development.
  • This is made possible by putting in place polices and sustainable/conservation programs such as the CAMPFIRE.
  • The following are […]
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The different types of fishing methods

By |2022-09-15T12:34:50+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Subsistence fishing using mosquito nets in Malawi. Image credit dw.com

ZIMSEC O Level Geography Notes:Natural Resources: Fishing: Fishing methods

  • Subsistence fishers use:
  • basket traps,
  • hooks and lines,
  • scoops and dugout canoes.
  • These are mainly confined to the shallow waters of Lakes Malombe, Chiuta, Chilwa in southern Malawi and swamps of the […]
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The world’s major fisheries

By |2022-09-15T12:34:41+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

World’s Aquatic habitats. Image credit utexas.edu

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:The world’s major fisheries

  • Fresh water fishing is important in localized communities.
  • In most cases the world’s fish comes from the ocean.
  • Most of the world’s productive ocean fisheries are located in the shallow waters of continental shelves […]
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Small scale energy sources and plants:Bio-fuel

By |2022-09-15T12:34:33+02:00January 24th, 2023|Notes, O Level Geography, Ordinary Level Notes|

Jatropha plant. Image credit jatropha.org.za

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Small scale energy sources and plants:Bio-fuel

  • is a fuel that is produced through contemporary biological processes,
  • such as agriculture and anaerobic digestion,
  • rather than a fuel produced by geological processes such as those involved in the formation of fossil […]
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