Ecological Zone Temperature (ºC) Rainfall (mm) I 45 300 II 32 2000 III 30 2200...

JAMB 2004

Ecological Zone	Temperature (ºC)	Rainfall (mm)
I	45	300
II	32	2000
III	30	2200
IV	15	800

From the table above high relative humidity will be expected in zones

A. I and III
B. I and IV
C. II and III
D. II and IV

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Correct Answer: Option C

Explanation

Rainfall and relative humidity have a positive relationship, meaning that rainfall increases relative humidity, and relative humidity increases rainfall. Rainwater evaporates into the air, increasing the amount of water vapour in the air. The longer it rains, the more water vapour is added to the air. Consequently, an increase in rainfall only implies the increase emanated from increased relative humidity. Since the ecological zones with high rainfall of 2000 and 2200 are II and III respectively. Option C is the correct answer.

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