Correct Answer: C. Hophni and Phineas

Correct Answer: D. Spirogyra and pond skater

Correct Answer: B. natural change and migration

Correct Answer: B. I₂< Br₂< Cl₂

Correct Answer: B. culled

Correct Answer: D. machinery

Correct Answer: A) the Jebusites

Explanation

The question is asking who David took Jerusalem from. The options are the Jebusites, the Philistines, the Ammonites, and the Edomites. Among these options, the correct answer is the Jebusites. According to the Bible, David conquered Jerusalem and made it the capital of Israel. The Jebusites were the original inhabitants of Jerusalem and were known to be a stubborn and powerful people. In fact, they thought their city was unconquerable, but David proved them wrong. David's victory over the Jebusites showed his military prowess and helped establish his reign as king of Israel. This event is significant in the history of Israel and is remembered as a great achievement of David. To learn more about this, please read the relevant sections of the recommended textbooks.

Correct Answer: B. Jahillyyah

Explanation

(a) An industry is a group of related firms classified according to the type of goods and services produced. It is a group of firms producing similar commodities or offering similar services.

(b)(i) Division of labour is the breaking down of a production process into different stages such that each part is handled by a particular individual, unit or department.

(ii) Economies of scale are the internal and external cost-saving benefits that accrue to a firm as it expands in size.

(c)(i) Marketing economies – Larger firms can buy inputs in bulk and enjoy discount and also employ an efficient and well organized marketing strategy and also afford to advertise more.

(ii) Risk - bearing economies – Larger firms can diversify their products so that they will not suffer unduly if one line of production becomes unprofitable.

(iii) Financial economies – Larger firms can easily access loans from banks and other financial institutions at lower interest rates because they have collateral and are more credit worthy.

(iv) Technical economies – As a firm expands in size, it can afford advanced technology and sophisticated plants and machinery, leading to increased output at a lower unit cost.

(v) Managerial economies – Larger firms can employ well-qualified and competent personnel to supervise various departments.

(vi) Welfare economies –Larger firms can provide better packages for employees to boost their morale e.g. subsidized housing, canteen services etc.

(vii) Research and development economies – Larger firms have the resources to set up their own research departments or units which promote innovation and inventions.

Correct Answer: C. Argentina