Correct Answer: B. Capillary water

Correct Answer: D. Reduction of agricultural land

Correct Answer: D. Adamawa highlands

Correct Answer: C. Harmattan

Explanation

(a) The characteristics of the tropical grass land vegetation include:

(i) Dry season lasts for 6-7 months

(ii) Tall trees reaching 2m dominate the vegetation

(iii) Scattered trees mainly in the river valley called savanna parkland

(iv) Around the equator the trees are bigger and more common than grasses called savanna woodland

(v) Towards the desert with less rainfall there are few trees with short grasses called savanna scrub. Some of the trees here e.g acacia, baobab, etc are deciducus (i.e shod the it leaves during the dry season)

(b) The economic values of this vegetation type to the inhabitants of the region include:

(i) Livestock farming (e.g cattle rearing) is the most important occupation E.g Hausa - Fulani cattle rearers, Massai of Kenya etc. are known to be heavily involved in livestock farming.

(ii) Grain cultivation: Some elements 3f grains such as millets, sorghum and maize are widely cultivated. Groundnut and cotton can also be cultivated

(ii:) Game reserves. Most of these grasslands serve as game reserves e.g National Park of South Africa and Yankari Same Reserves are centres of attraction for tourism.

Correct Answer: D. guinea savanna

Explanation

(a) The difference between rotation and revolution of the earth. Rotation is the type of earth's movement in which it moves on its axis from west to east once in 24hrs making one day. Revolution is the second type of movement of the earth in which it revolves around th sun in 3651/4 days making a year.

(b) Two effects of rotation are the;

(i) day and night

(ii) the deflection c winds and ocean currents

(c) The eclipse of the sun is formed when the moon comes between the sun and the earth. When there is an eclipse of the moon, shadow of tne moon is cast, on the earth which could result in either partial or full darkness on the earth. The moon prevents the sun rays from getting to the earth. The positions of the sun, moon and the earth in an eclipse of the sun are shown in the diagram below

Correct Answer: A. Man

Correct Answer: B. cotton

Correct Answer: C. an intermont pleteau