Correct Answer: B. Nature of the goods

Explanation

(a) ways in which human activities affect the composition of the atmosphere ;

(i) Emission of carbon dioxide, e.g burning fossil fuel such as coal, petrol gas

(ii) Deforestation

(iii) Use of chemical, biological and nuclear warfare

(iv) Release of toxic waste

(v) Bush burning

(vi) Pollutants emitted from industrial activities

(vii) Pollutants emitted from mining and construction works

(b) physical changes that are likely to be associated with the increasing reduction of the ozone layer in the upper atmosphere

(i) As the ozone layer increases the amount of ultra-violet rays increases in the atmosphere

(ii) The increase in ultra-violet rays increases the amount of solar radiation at the earth's surface

(iii) Excessive ultra-violet rays leads to increase in skin cancer in man

(iv) Increased temperature leads to melting of polar ice and this leads to rise in sea levels.

(v) Possible increase in precipitation

(vi) Death of chlorophyll in plants leads to inability of plants to manufacture food.

Correct Answer: D. utmost good and favour

Correct Answer: C) Principle

Explanation

XWZ = 90° - (45° + 23°) = 22°

WYX = 180° - (45° + 95°) = 40°

< XZW = 180° - (89° + 22°) = 69°

(a)(i) \(\frac{XY}{\sin 95} = \frac{180}{\sin 40°}\)

\(XY = \frac{180 \sin 95}{\sin 40} = 278.96m\)

\(\approxeq 279m\)

(ii) \(\frac{ZW}{\sin 89°} = \frac{180}{\sin 69°}\)

\(ZW = \frac{180 \sin 89°}{\sin 69°} = 192.76m\)

\(\approxeq 193m\)

(b) < ZNX = <ZXN (base angles of an isosceles triangle)

= 44°^.

\(\therefore\) Bearing of Z from N = 270° + 44° = 314°.

Correct Answer: A. urbanization

Correct Answer: B. 20

Explanation

The line: \(3y + 6x\) = 48

Divide through by 3

⇒ y + 2\(x\) = 16

⇒ y = -2\(x\) + 16

∴ The gradient of the line = -2

The points: A(-2, k) and B (4, 8)

m =\(\frac{y2 - y1}{x2 - x1} = \frac{8 - k}{4 - (-2)}\)

⇒ m =\(\frac{8 - k}{4 + 2} = {8 - k}{6}\)

Since the line passes through the points

∴ -2 = \(\frac{8 - k}{6}\)

⇒ \(\frac{-2}{1} = \frac{8 - k}{6}\)

⇒ 8 - k = -12

⇒ k = 8 + 12

∴ k = 20

Explanation

(i) Serve as check against dictatorship.

(ii) Help to prevent bribery and corruption through their activities.

(iii) Provide useful information in the process of law making.

(iv) Assist in policy formulation and implementation.

(v) Provide educational programmes seminar, lectures, debates, etc.

(vi) Conduct research useful for the administration of the state on technical issues.

(vii) Serve as link between the people and the government.

(viii) Serve as yardstick for measuring the popularity of government policies.

(lix) Assist in championing the cause of the under privileged in the country.

Correct Answer: B. carmels

Correct Answer: A. monarchy

Explanation

A monarchy is a form of government in which a single person holds supreme authority in ruling a country, also performing ceremonial duties and embodying the country's national identity. Although some monarchs are elected, in most cases, the monarch's position is inherited and lasts until death or abdication. In these cases, the royal family or members of the dynasty usually serve in official capacities as well. The governing power of the monarch may vary from purely symbolic (crowned republic), to partial and restricted (constitutional monarchy), to completely autocratic (absolute monarchy).