February 2025

Harris and Ullman’s Multi-nuclei model (1945)

By |2025-02-12T09:02:11+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The Multi-nuclei model. Image credit MediaWiki The Multi-nuclei model. Image credit MediaWiki ZIMSEC O Level Geography Notes: Settlements: Harris and Ullman’s Multi-nuclei model (1945)

They made their study well after the other two models had been published and thus had the benefit of hindsight and cities had since grown in size.

Findings

  • They […]
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The city of Gweru

By |2025-02-12T09:42:20+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

The city of Gweru. Image credit vevesworld.com

ZIMSEC O Level Geography Notes: Settlements: The city of Gweru

  • Gweru is an administrative capital of the Midlands region.
  • It has a male population of 776 787 and a female population of 838 154 which results in a total population of 1 614 941 […]
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Common Killer Diseases in the Tropics: Malaria

By |2025-02-12T09:30:27+02:00February 12th, 2025|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 |2025-02-12T09:26:20+02:00February 12th, 2025|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 |2025-02-12T09:33:00+02:00February 12th, 2025|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 |2025-02-12T09:43:04+02:00February 12th, 2025|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 |2025-02-12T09:07:44+02:00February 12th, 2025|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 |2025-02-12T09:01:33+02:00February 12th, 2025|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 |2025-02-12T08:55:54+02:00February 12th, 2025|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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