February 2025

Conservation of mineral resources

By |2025-02-12T09:01:45+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A pile of metal awaiting recycling. Image credit earth911.com

ZIMSEC O Level Geography Notes: Natural Resources:Conservation of mineral resources

  • Conservation of resources is the ethical use and protection of valuable resources, such as trees, minerals, wildlife, water and others.
  • It focuses on maintaining the natural world in order to protect the […]
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Deforestation in tropical rainforests

By |2025-02-12T09:41:25+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Deforestation in a Tropical Rainforest. Image credit .worldwildlife.org

ZIMSEC O Level Geography Notes:Natural Resources:Tropical deforestation

  • Deforestation in tropical rain forests is mainly a result of the need to meet local and external needs.
  • Local needs are generally basic and include the following:
  • Agriculture- population pressures and rural poverty forces people to […]
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Natural Resouces: Fishing

By |2025-02-12T09:31:39+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Fishing in a river. Image credit africanfishermanonline.com

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

Introduction

  • The Southern Africa Development Community (SADC) countries are found between the Atlantic Ocean on the west and Indian Ocean on the east.
  • The region is endowed with large fresh water bodies.
  • These are in the […]
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Sea fishing methods

By |2025-02-12T09:19:05+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Hauling in fish during commercial sea fishing. Image credit pinterest.comg

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

  • The types of fishing methods employed in sea fishing are determined by the type of fish being exploited.
  • There are two main types of fish found in the oceans of Southern […]
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Nuclear power: Factors affecting location

By |2025-02-12T09:36:40+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Pelindaba Nuclear station South Africa. Image credit thinkgeoenergy.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Nuclear power: Location factors

  • The pollution caused by nuclear power plants and the ever present danger of a melt down and nuclear fall-out have made such plants very sensitive in terms of location relative to […]
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Longtitude and time calculations

By |2025-02-12T09:03:43+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Different Time Zones

ZIMSEC O Level Geography Notes: Transport and Trade : How to calculate time for different countries

  • A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes.
  • Time zones tend to follow the boundaries of countries and their subdivisions because […]
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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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Inland fresh water fishing

By |2025-02-12T09:32:36+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Woman fishing in a river. Image credit adventourizim.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing: Inland fresh water fishing

  • Subsistence fishing has been and is still practiced in Southern Africa.
  • Subsistence fishing refers to fishing, other than sport fishing, that is carried out primarily to feed the family and relatives […]
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Fish conservation at sea level

By |2025-02-12T09:19:34+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Fish drying. Image credit irinnews.org

ZIMSEC O Level Geography Notes: Natural Resources:Fishing:Fish conservation at sea level

  • Sustainable use of fish resources is necessary in order to meet present and future needs.
  • The following have been adapted by SADC countries to ensure sustainability of the fishing industry.
  • Quota system. Countries like South […]
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Small scale energy sources and plants:Biogas plant

By |2025-02-12T09:44:21+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Biogas Digestor in rural Zimbabwe. Image credit climatetracker.org

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Small scale energy sources and plants:Biogas plant

  • To install a bio-gas plant, a pit is dug underground near to the kitchen the depth of which is determined by the size of the plant the family wants […]
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