Correct Answer: D. repetition

Correct Answer: B. crisis

Correct Answer: D. World Health Organization

Explanation

(a) How the human ear carries out its function of balancing;

- Head movement in any direction affect the fluid/endolymph, In the semi-circular canals, Which are at right angles to each other, The movement forces the sensory/hair cells in the ampulla to set up the impulses, The brain interprets the impulses and relays the impulses to the body muscles for balancing.

(b)(i) Diagram of the Human Ear;

(b)(ii) Description of the structure of the middle ear; The middle ear is an air filled chamber, It connects the ear drum of the oval window fenestra ovalis. It contains three bones/hammer/malleus, anvil/incus and stapes/stirrup/ear ossicles. The malleus is attached to the tympanic membrane/tympanum/eardrum. Each of the bones has direct contact with the one next to it, the eustachian tube is formed at the base of the middle ear . The eustachian tube links the ear to the throat/pharynx.

Explanation

(a) Factors which encourage entrepreneurs to adopt division of labour are:

(i) Division of labour makes it possible for more workers to be employed. This leads to an increase in output.

(ii) Time is saved in division of labour because no time is lost in moving from one stage of production to the other.

(iii) Division of labour makes the use of machine possible at each stage of production. This leads to better and increased production.

(iv) Specialists handle various aspects of production in division of labour. This leads to innovations and sometimes, inventions.

(v) Since each worker on the production line does only one aspect of the production process, the worker experiences less fatigue.

(vi) In division of labour, one person is responsible for an aspect of production on which he concentrates his efforts and skill. With time, the individual's skill improves

(vii) With the use of machinery, various type of technology are developed to further facilitate production.

(b) Factors.that are capable of limiting the practice of division of labour are:

(i) The level of technology sets a limit to the extent of specialization. New technological break through may allow further specialization.

(ii) The nature of the product may not give room for division of labour e.g barbing, hairdressing and driving.

(iii) In the field of Creative art, division of labour is limited because, individual talent is all important and works cannot be mass-produced.

(iv) A small market discourages mass production and hence, division of labour. If the market is large enough to absorb sizable quantities of the product, it will encourage division of labour.

(v) Mass production requires factor inputs in suitable quantities and qualities. The extent to which these factors are available deter-mine the degree of specialization in the industry.

Explanation

(a) Reasons for consumer protection are:

(i) Incorrect weight and measures of goods offered for sale: Some goods are offered for sale without sellers considering the prescribed weight or quantity e.g petrol and grains.

(ii) Misleading advertisement: Many claims made by advertisers about the performance of their products are not correct Such false adverts are deceptive.

(iii) Unreasonable high prices: Prices of certain goods are so high that it may be impossible to buy such items.

(iv) Sub - standard goods: Some goods are produced without taking into consideration the quality desired.

(v) Credit purchase agreement: Consumers are often not well informed about the details of such agreement.

(vi) Sales of harmful food and drugs: Consumers need protection to ensure that goods offered for sale do not :ontain dangerous chemicals or damaging side effect.

(b) Government legislations aimed at protecting the consumers are:

(i) Weight and Measures Act helps to prevent the use of incorrect weight and measures.

(ii) The Trade Description Act is aimed at checking misleading advertising.

(iii) Hire Purchase Act is aimed at protecting the rights of the consumers.

(iv) Price Control Act is aimed at controlling prices.

(v) Standard Organization Acts.

(vi) Foods and Drugs Act protects consumers against harmful goods.

(vii) Sales of Goods Act of 1893.

(viii) Consumer Credit Act of 1974.

Correct Answer: B. the need of individual

Explanation

communism is advocacy of a classless society in which private ownership has been abolished and the means of production and subsistence belong to the community

Correct Answer: A. The electrolyte does not need attention

Correct Answer: C. 225 litres

Correct Answer: B. face