natural resources Archives - Page 5 of 10 - Free ZIMSEC & Cambridge Revision Notes

Ocean currents and the fishing industry

By Rachel Majaya|2025-02-12T09:11:44+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Ocean currents of the world. Image credit Pearson

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Ocean currents and the fishing industry

Ocean currents are important in the fishing industry as they affect the growth of plankton which provides fish food.
Warm ocean currents restrict the growth of plankton hence give rise […]

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Geothermal power: Introduction

By Rachel Majaya|2025-02-12T09:34:50+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Geothermal Power Station. Image credit MediaWiki

ZIMSEC O Level Geography Notes: Natural Resources: Energy:Geothermal power

Geothermal power is generated using steam rhythmically shooting out from underground at high pressure in the form of geysers.
To control the movement of steam, an intricate network of pipes is installed collecting and directing the […]

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Advantages and Disadvantages of Hydroelectricity

By Rachel Majaya|2025-02-12T09:01:03+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A micro-hydroelectric power station. Image credit abc.net.au

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of Hydroelectricity

Advantages

Renewable energy source.
Cheap to maintain as water-transports itself to plants.
Very clean energy source.
Easy to use.
Very versatile, that is many uses.
Large lakes are multi-purpose can also be […]

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Effects of mining on the environment

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

Gullying as a result of panning. Image credit Reuters

ZIMSEC O Level Geography Notes: Natural Resources Impact of mining on the environment

Deforestation and erosion as large areas are cleared when surface methods of mining are used.
Frequency of open quarries, trenches and pits may cause land degradation.
Infrastructure development which include the […]

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Uses,problems,solutions of commercial forests in Zimbabwe

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

Treated poles. Image credit wattle.co.zw

ZIMSEC O Level Geography Notes:Uses, problems and solutions of commercial forests

Commercial forests have different uses.
Some of which include:
1. The pine and eucalyptus are mainly used for construction purposes, furniture making as well as in the pulp and paper industry.
2. Treated eucalyptus poles are also […]

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Natural Resources: Water conservation

By Rachel Majaya|2025-02-12T09:25:37+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Conservation of water is important. Image credit voanews.com

ZIMSEC O Level Geography Notes: Natural Resources: Water:Water conservation

Water conservation is the management of water resources in ways that prevent them from pollution.
It includes all the policies, strategies and activities made to sustainably manage the natural resource fresh water.
It also […]

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Sea fisheries found on the west coast of Southern Africa

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

Recreational fishing off the coast of Namibia. Image credit travelnewsnamibia.com

ZIMSEC O Level Geography Notes: Natural Resources: Fishing:Sea fisheries on the west coast of Southern Africa

Fisheries of the Benguela cold current system cover the area along the west coast of South Africa, Namibia and southern Angola.
The area on the […]

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Geothermal power: Locational factors

By Rachel Majaya|2025-02-12T09:35:41+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

A geothermal station in Iceland. Image credit ucsusa.org

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Geothermal power locational factors

Geothermal power can only be generated in areas of active volcanicity.
These areas are known as geothermal hotspots.
These are zones where volcanic activity underground makes rocks hot and these rocks […]

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Advantages and Disadvantages of wood as a source of energy

By Rachel Majaya|2025-02-12T09:01:34+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Burning wood. Image credit villagenews.com

ZIMSEC O Level Geography Notes: Natural Resources: Energy: Advantages and Disadvantages of wood/crop residue/cow dung as a source of energy

Advantages

Renewable energy sources.
Cheap or free in rural areas.
Easily accessible where forests or woodlands/crops/animals exist.
Tsotso stoves conserve live trees.
Technology very cheap and readily […]

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Rehabilitation of mine areas.

By Rachel Majaya|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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February 2025