February 2025

Respiration

By |2025-02-12T09:36:04+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Respiration

  • During the gaseous exchange process oxygen is taken into the body and carbon dioxide is expended.
  • Oxygen is needed to burn fuels to release energy.
  • Food is a fuel and oxygen is used by th cells to “burn” the fuel.
  • The burning process is very slow and there are not flames involved.

    • […]

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The economic activities of Great Zimbabwe

By |2025-02-12T09:15:16+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Iron age tools. Image credit ct.gov Iron age tools. Image credit ct.gov ZIMSEC O Level History Notes: Great Zimbabwe: The economic activities of Great Zimbabwe

Economic activities carried out at Great Zimbabwe

  • The people at Great Zimbabwe engaged in a variety of economic activities including:
  • hunting
  • gathering
  • mining
  • the paying and receiving of tribute
  • pottery making
  • blacksmithing (ironworks)
  • trade […]
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The decline of the Prazo system and the decline of the Portuguese influence in the Interior

By |2025-02-12T09:45:41+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Galley slaves. Image credit lead-adventures.de Galley slaves. Image credit lead-adventures.de ZIMSEC O Level History Notes: The Portuguese activities in Zambezi valley: The decline of the Prazo system

  • The lack of industry, commerce,education and religious work in prazo areas led to their eventual decline and the crumbling of the prazo system.
  • Most of […]
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Reasons why Tshaka was assassinated

By |2025-02-12T09:09:23+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Tshaka the Zulu King(c1787-1828). Image credit myspace.com Tshaka the Zulu King(c1787-1828). Image credit myspace.com ZIMSEC O Level History Notes: The Zulu under Tshaka: Reasons why Tshaka was assassinated.

  • He was an absolute ruler/tyrant.
  • He disrespected and often humiliated traditional chiefs.
  • He did not consult with his commanders.
  • He dismissed commanders at will often  for […]
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Missionaries who worked in Mashonaland between 1850 and 1900

By |2025-02-12T09:22:49+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Robbert Moffat and Khama. Image credit Memories of Mashonaland Robbert Moffat and Khama from a book by Bishop Knight Bruce. Image credit Memories of Mashonaland ZIMSEC O Level History Notes: Missionaries: Missionaries who worked in Mashonaland between 1850 and 1900

The purpose of the dates is to exclude early Portuguese Missionaries […]

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Settlements established by the Ndebele South of the Limpopo

By |2025-02-12T09:37:22+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

Mzilikazi Khumalo King of the Ndebele. Image credit africanfederation.net Mzilikazi Khumalo King of the Ndebele. Image credit africanfederation.net ZIMSEC O Level History Notes: The Ndebele: Settlements established by the Ndebele South of the Limpopo

  • These are the names of the settlements established by the Ndebele south of the Limpopo as they […]
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Zimbabwe’s towns and Cities an Introduction

By |2025-02-12T09:03:07+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Bulawayo Zimbabwe's second largest city. Image credit southerneye.co.zw Bulawayo Zimbabwe’s second largest city. Image credit southerneye.co.zw ZIMSEC O Level Geography Notes: Settlements: Zimbabwe’s towns and Cities an Introduction

  • An urban settlement in Zimbabwe is one whose population is more than 2 500 or more with the majority of its workers (more […]
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Franchise Business

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

ZIMSEC O Level Business Studies Notes: Franchise Business

Characteristics/Features

  • Franchise occurs when the owner of a business (the franchisor) grants a licence to another person or business (the franchisee) to use their business idea – often in a specific geographical area.
  • The franchisee sells the franchisor’s product or services, trades under the franchisor’s trade mark or trade name and benefits […]
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Advantages and Disadvantages of a Population Census

By |2025-02-12T08:58:29+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A census in progress. Image credit times.co.za A census in progress. Image credit timeslive.co.za ZIMSEC O Level Geography Notes: Population:Advantages and Disadvantages of a Population Census

  • Like most things a population census has both its merits and demirits

Advantages

  • It is the most accurate count of a country’s population on which official planning […]
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