Explanation

(a)(i) The three climatic belts recognised by the Greek system of classification include:

(i) Torid belt

(ii) Temperate belt

(iii) Frigid belt

(iii) The basis of classification is temperature

(b) One characteristic of each of the belts:

(i) Torrid belt: It is found in the tropics with high temperatures throughout the year

(ii) Temperate belt: It has a seasonal contrast in temperature

(iii) The frigid belt has very low temperature throughout the year.

(c) Three advantages of Koppen's classification over the Greek system include:

(i)It is simple to understand

(ii) It is objective

(iii) It is commonly used in teaching at different levels of educational institutions.

Explanation

< PAB = < ABE = 53° (alternate angles)

< CBE = 180° - < DBC = 180° - 161° = 19°

< ABC = < ABE + < CBE

= 53° + 19° = 72°

(a) In \(\Delta ABC\),

\(AC^{2} = AB^{2} + BC^{2} - 2(AB)(BC) \cos < ABC\)

\(AC^{2} = 15^{2} + 18^{2} - 2(15)(18) \cos 72\)

= \(225 + 324 - 540 \cos 72\)

= \(549 - 166.869\)

\(AC^{2} = 382.131\)

\(AC = \sqrt{382.131} = 19.548m\)

\(\approxeq 19.5m\)

(b) \(\frac{\sin A}{18} = \frac{\sin 72}{19.548}\)

\(\sin A = \frac{18 \times \sin 72}{19.548}\)

\(\sin A = 0.8757\)

\(A = \sin^{-1} (0.8757) = 61.13°\)

The bearing of C from A = 61.13° + 53° = 114.13° \(\approxeq\) 114°.

(c) In \(\Delta ATB\),

\(\frac{15}{BT} = \tan 58\)

\(BT = \frac{15}{\tan 58}\)

\(9.373 m \approxeq 9.37m\)

Correct Answer: D. causes plant roots to wilt

Correct Answer: D. stock

Explanation

(a) Peter's instructions on good citizenship: He instructed Christians to be subject to every human institution. They should respect Governors sent by the Emperor to punish those who do wrong. They should give praise tc those who do right. He also emphasized that, it is God's will that by doing right, they should put to silence the ignorance of foolish men. They are to live as free men. They should not use their freedom as a pretext for evil. They should live as servants of God. Honour should be given to all men. They should love the brotherhood. The fea of God should be at the back of their minds. The Emperor should be honoured.

(b) Ways Christians can act as good citizens today are:

(i) Regular payment of tax.

(ii) Use of voting rights.

(iii) Be law-abiding.

(iv) Patriotism / loyalty.

(vii) Maintaining a good environment.

(viii) Contributing to voluntary organizations.

(ix) Caring for public property.

Explanation

(i) Differences between Erosion and Mass Movement

— Erosion is the gradual removal of top soil while mass movement is the movement of loose rock materials down slope

— Agents of erosion are running water, winds, waves and glacier while that of mass movement entails the force of gravity.

—Erosion involves scratching, polishing and plucking of loose, rock surfaces while mass movement involves creeping, flowing, slumping, sliding and falling.

(ii) Main features of River Erosion Gorges

— Cayons

— waterfalls

— Rapids

— Capture

— Potholes

— Interlocking spurs.

Main Features of Mass Movements

— Slumps and sl;de scars Slumped block

— Hummocky topography

— Talus

— Screes

(b) Factors Affecting Mass Movement

— Gradient of the slope determines rate of movement, e.g steep slope encourages faster mass movement

— the try activities of man on slope could promote or reduce movement of loose rock materials.

— Presence of vegetation tends to reduce the rate of movement down the slope and vice versa.

— Depth of weathering

— mass movement can be more active in areas of deep weathering.

— Presence of lubricating moisture e.g presence of rain water, ice, etc tends to promote mass movement down slope.

— The nature / weight of rock materials e.g loose and light rock materials tend to move faster than lightly held and heavy materials.

— The occurrence of earthquake often triggers off mass movement of steep slopes.

— Volcanic eruption can also lead to mass movement.

Correct Answer: A. 1, -2

Correct Answer: C. 52

Correct Answer: A. reduced to lactic acid

Correct Answer: A. Complements another character