OBJECTIVES: At the end of the lesson students should be able to
- define climate, vegetation and soil.
- discuss the relationship between climate and vegetation and they affect the soil content.
- draw a sketch map of Nigeria showing the vegetation zones and give the characteristics of these zones.
- state and describe the two types of seasons and four types of climate in Nigeria.
- give the meaning, causes, effects and control of desert encroachment.
Climate is the average weather condition of the atmosphere over a very long period of time. Important elements of climate that need discussion include temperature, wind and rainfall.
(a) Temperature is defined as the degree of hotness or coldness of a place. The temperature in Nigeria is not uniform.
- It varies from place to place.
- It varies with altitude.
- It varies with seasons.
- Variation in annual range.
(b) Wind is defined as air in motion. There are four local types of winds in Nigeria.
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