natural resources Archives - Free ZIMSEC & Cambridge Revision Notes

Oil in Nigeria:Benefits, drawbacks, problems of oil extraction

By Rachel Majaya|2025-02-12T09:00:47+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

An oil spill in Nigeria. Image credit huffingtonpost.com

ZIMSEC O Level Geography Notes: Natural Resources: Oil in Nigeria:Problems of oil extraction

The following are problem associated with oil extractions:

Hot humid equatorial climate is associated with high incidence of environmental diseases.
High temperatures reduce the capability of to work.
Slippery and unstable […]

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Exotic commercial forests

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

Pine tree forest. Image credit nyobain.com

ZIMSEC O Level Geography Notes: Natural Resources: Forestry in Zimbabwe: Exotic commercial forests

These are extensive forest areas planted with imported tree varieties like pine, wattle and eucalyptus.
These forests are mainly found in the Eastern Highlands where there was less competition with crop farming […]

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Natural Resources: Water pollution
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Natural Resources: Water pollution

Notes, O Level Geography, Ordinary Level Notes

Natural Resources: Water pollution

By Rachel Majaya|2025-02-12T09:25:05+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

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

Water pollution is the contamination of water bodies for example lakes, rivers, oceans, aquifers and groundwater.
This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.
Water pollution can also be defined as the […]

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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 Solar energy

By Rachel Majaya|2025-02-12T09:00:48+02:00February 12th, 2025|Notes, O Level Geography, Ordinary Level Notes|

Solar Power Plant. Image credit sma-america.com

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

Advantages

Renewable energy source.
Plentiful and inexhaustible.
Very clean.
Relatively cheap.
Can power vehicles.
Suitable even in remote areas.
High energy output.
No pollutions associated with it.

Disadvantages

Expensive for poor rural communities.
Affected […]

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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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February 2025