Correct Answer: D. oxidation and hydrolysis

Correct Answer: D. speed

Correct Answer: D. improvement in the quality of farm produce

Explanation

a. Functions of the Stock Exchange:

(i) The stock exchange makes it easy for securities to be converted into cash.

(ii) The exchange makes it possible for the transfer of securities from their original owners who may wish to sell them to others.

(iii) An investor always knows the price of his shares or holdings whether they are for sale or not as their prices are always quoted on daily basis by the Stock Exchange.

(iv) The Stock Exchange helps firms/ companies to raise capital through the sale of stocks/shares.

(v) The Stock Exchange creates confidence in the investing public by drawing up rules and guidelines which ensure fair play in share dealings.

(vi) The Exchange brings buyers and sellers of securities together.

(vii) It approves the quotation or listing of new shares thereby making them known to the public.

(b) Ways the Central Bank regulates the activities of Commercial Banks:

(i)Special deposits: Commercial banks are required to have special deposits with the Central Bank. This can be increased or decreased to influence commercial bank activities.

(ii)Bank rates:The Central Bank determines the rate at which the commercial bank should lend by fixing the minimum discount rate.

(iii)Special directives: Central Bank gives special directives to commercial banks regarding areas in the economy for which loans and advances should be given.

(iv)Moral suasion: The Central Bank sometimes engages the commercial bank in a dialogue in order to agree on how banking activities are to be carried out

(v)Cash Ratio: This is the relationship between the total deposit and cash held against it. It can be increased by the Central Bank as a control to commercial banks' activities.

(vi)Supervision: The Central Bank controls the activities of commercial banks by engaging in close supervision in ensuring that their operations are in conformity with set standards.

(vii)Open market operations:This is the strategy used by Central Bank to reduce or increase the ability of other banks to lend money to its customers by buying or selling bonds and stocks to the public as the case may be.

Correct Answer: C. violet and red.

Explanation

Violet light has the shortest wavelength among visible colors, while red light has the longest wavelength. The visible light spectrum, in order of increasing wavelength, goes from violet to blue, green, yellow, orange, and finally red.

Explanation

(a) Role of soil organisms in the formation of soils are.-

(i) The microbes by their enzymes, break down rock particles.

(ii) Burrowing activities of microbes enhance aeration and introduction of water into the rocks, thereby enhancing rock break down. ( Earthworm activities).

(iii) and other rodents cause pressure by their burrowing activities, thereby creating channels and tracks through which air and water penetrate to promote the breakdown of rocks.

(iv) Activities of earthworm, ants, termites and crickets disintegrate rocks through engulfing, crushing, and expulsion of smaller soil particles.

(v) Soil micro -organism incorporate organic matter into the soil due to their burrowing activities, thus enhancing the faster disintegration of rocks.

(vi) The wastes of organic acidic and hasten the disintegration of rocks.

(vii) Fungi and soil - borne algae act on soil organic matter which releases acids that promote rock disintegration.

(viii) Lower plant forms, such as lichens and mosses can disintegrate rock by their activity through the release of corrossive substances from their fast holds.

(ix) As plant roots without organisms into the soil, they encounter and breakdown rocks as they force their way through rocks.

(x) Dead organism accumulate and aid soil formation

(b) Ways in which soil organisms improve soil for growth of crops are:

(i) Improve soil structure and granulation.

(ii) Improve soil aeraton.

(iii) Improve soil water percolation or drainage.

(iv) Increase organic matter content of soil.

(v) Increase soil colloidal properties

(vi) Enhance the cation exchange capacity of the soil.

(vii) Through burrowing, they eave holes for crop root to penetrate.

(viii) Increase the mineral or nutrient status of the soil

(ix) Stabilize soil pH through the increase of soil organic matter

Correct Answer: B. ll and lll only

Correct Answer: D. Rain forest

Correct Answer: D. executive

Correct Answer: A. √2km N 45°E